HBASE-27401 Clean up current broken 'n's in our javadoc (#4812)

Signed-off-by: Andrew Purtell <apurtell@apache.org>
(cherry picked from commit 63cdd026f0)

Conflicts:
	hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupManager.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionLocation.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/client/Append.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/client/Mutation.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/client/Scan.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueExcludeFilter.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueFilter.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/security/visibility/VisibilityClient.java
	hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java
	hbase-common/src/main/java/org/apache/hadoop/hbase/CellUtil.java
	hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestReplication.java
	hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/client/TestRemoteTable.java
	hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManager.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/HBaseServerBase.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Region.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.java
	hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/MetricsSource.java
	hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtil.java
	hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java
	hbase-server/src/test/java/org/apache/hadoop/hbase/tool/TestBulkLoadHFilesSplitRecovery.java
	hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/ThriftUtilities.java

hbase-asyncfs/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java

@@ -368,7 +368,7 @@ public final class FanOutOneBlockAsyncDFSOutputSaslHelper {
        * Create a ByteString from byte array without copying (wrap), and then set it as the payload
        * for the builder.
        * @param builder builder for HDFS DataTransferEncryptorMessage.
-       * @param payload byte array of payload. n
+       * @param payload byte array of payload.
        */
       static void wrapAndSetPayload(DataTransferEncryptorMessageProto.Builder builder,
         byte[] payload) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java

@@ -53,7 +53,8 @@ public class ClusterId {
   /**
    * Parse the serialized representation of the {@link ClusterId}
    * @param bytes A pb serialized {@link ClusterId} instance with pb magic prefix
-   * @return An instance of {@link ClusterId} made from <code>bytes</code> n * @see #toByteArray()
+   * @return An instance of {@link ClusterId} made from <code>bytes</code>
+   * @see #toByteArray()
    */
   public static ClusterId parseFrom(final byte[] bytes) throws DeserializationException {
     if (ProtobufUtil.isPBMagicPrefix(bytes)) {
@@ -79,9 +80,7 @@ public class ClusterId {
     return builder.setClusterId(this.id).build();
   }
 
-  /**
+  /** Returns A {@link ClusterId} made from the passed in <code>cid</code> */
-   * n * @return A {@link ClusterId} made from the passed in <code>cid</code>
-   */
   public static ClusterId convert(final ClusterIdProtos.ClusterId cid) {
     return new ClusterId(cid.getClusterId());
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java

@@ -275,7 +275,7 @@ public class ClusterStatus implements ClusterMetrics {
   }
 
   /**
-   * n * @return Server's load or null if not found.
+   * @return Server's load or null if not found.
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link #getLiveServerMetrics} instead.
    */

hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java

@@ -356,8 +356,8 @@ public class HColumnDescriptor implements ColumnFamilyDescriptor, Comparable<HCo
 
   /**
    * Set whether the tags should be compressed along with DataBlockEncoding. When no
-   * DataBlockEncoding is been used, this is having no effect. n * @return this (for chained
+   * DataBlockEncoding is been used, this is having no effect.
-   * invocation)
+   * @return this (for chained invocation)
    */
   public HColumnDescriptor setCompressTags(boolean value) {
     getDelegateeForModification().setCompressTags(value);
@@ -687,8 +687,8 @@ public class HColumnDescriptor implements ColumnFamilyDescriptor, Comparable<HCo
   /**
    * Parse a serialized representation of a {@link HColumnDescriptor}
    * @param bytes A pb serialized {@link HColumnDescriptor} instance with pb magic prefix
-   * @return An instance of {@link HColumnDescriptor} made from <code>bytes</code> n * @see
+   * @return An instance of {@link HColumnDescriptor} made from <code>bytes</code>
-   *         #toByteArray()
+   * @see #toByteArray()
    */
   public static HColumnDescriptor parseFrom(final byte[] bytes) throws DeserializationException {
     ColumnFamilyDescriptor desc = ColumnFamilyDescriptorBuilder.parseFrom(bytes);
@@ -732,7 +732,7 @@ public class HColumnDescriptor implements ColumnFamilyDescriptor, Comparable<HCo
   }
 
   /**
-   * Set the encryption algorithm for use with this family n
+   * Set the encryption algorithm for use with this family
    */
   public HColumnDescriptor setEncryptionType(String value) {
     getDelegateeForModification().setEncryptionType(value);

hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java

@@ -94,7 +94,7 @@ public class HRegionInfo implements RegionInfo {
   private static final int MAX_REPLICA_ID = 0xFFFF;
 
   /**
-   * n * @return the encodedName
+   * @return the encodedName
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link org.apache.hadoop.hbase.client.RegionInfo#encodeRegionName(byte[])}.
    */
@@ -212,7 +212,7 @@ public class HRegionInfo implements RegionInfo {
    * Construct HRegionInfo with explicit parameters
    * @param tableName the table name
    * @param startKey  first key in region
-   * @param endKey    end of key range n
+   * @param endKey    end of key range
    */
   public HRegionInfo(final TableName tableName, final byte[] startKey, final byte[] endKey)
     throws IllegalArgumentException {
@@ -225,7 +225,7 @@ public class HRegionInfo implements RegionInfo {
    * @param startKey  first key in region
    * @param endKey    end of key range
    * @param split     true if this region has split and we have daughter regions regions that may or
-   *                  may not hold references to this region. n
+   *                  may not hold references to this region.
    */
   public HRegionInfo(final TableName tableName, final byte[] startKey, final byte[] endKey,
     final boolean split) throws IllegalArgumentException {
@@ -405,7 +405,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Gets the start key from the specified region name. n * @return Start key.
+   * Gets the start key from the specified region name.
+   * @return Start key.
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link org.apache.hadoop.hbase.client.RegionInfo#getStartKey(byte[])}.
    */
@@ -415,9 +416,10 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Separate elements of a regionName. n * @return Array of byte[] containing tableName, startKey
+   * Separate elements of a regionName.
-   * and id n * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
+   * @return Array of byte[] containing tableName, startKey and id
-   * {@link RegionInfo#parseRegionName(byte[])}.
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
+   *             {@link RegionInfo#parseRegionName(byte[])}.
    */
   @Deprecated
   @InterfaceAudience.Private
@@ -426,9 +428,9 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * n * @return if region name is encoded. n * @deprecated As of release 2.0.0, this will be
+   * @return if region name is encoded.
-   * removed in HBase 3.0.0 Use
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
-   * {@link org.apache.hadoop.hbase.client.RegionInfo#isEncodedRegionName(byte[])}.
+   *             {@link org.apache.hadoop.hbase.client.RegionInfo#isEncodedRegionName(byte[])}.
    */
   @Deprecated
   public static boolean isEncodedRegionName(byte[] regionName) throws IOException {
@@ -494,7 +496,7 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get current table name of the region n
+   * Get current table name of the region
    */
   @Override
   public TableName getTable() {
@@ -741,7 +743,8 @@ public class HRegionInfo implements RegionInfo {
   /**
    * Parse a serialized representation of a {@link HRegionInfo}.
    * @param bytes A pb RegionInfo serialized with a pb magic prefix.
-   * @return A deserialized {@link HRegionInfo} n * @see #toByteArray()
+   * @return A deserialized {@link HRegionInfo}
+   * @see #toByteArray()
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link org.apache.hadoop.hbase.client.RegionInfo#parseFrom(byte[])}.
    */
@@ -755,7 +758,8 @@ public class HRegionInfo implements RegionInfo {
    * @param bytes  A pb RegionInfo serialized with a pb magic prefix.
    * @param offset starting point in the byte array
    * @param len    length to read on the byte array
-   * @return A deserialized {@link HRegionInfo} n * @see #toByteArray()
+   * @return A deserialized {@link HRegionInfo}
+   * @see #toByteArray()
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link org.apache.hadoop.hbase.client.RegionInfo#parseFrom(byte[], int, int)}.
    */
@@ -780,8 +784,8 @@ public class HRegionInfo implements RegionInfo {
   /**
    * Use this instead of {@link #toByteArray()} when writing to a stream and you want to use the pb
    * mergeDelimitedFrom (w/o the delimiter, pb reads to EOF which may not be what you want).
-   * @return This instance serialized as a delimited protobuf w/ a magic pb prefix. n * @see
+   * @return This instance serialized as a delimited protobuf w/ a magic pb prefix.
-   *         #toByteArray()
+   * @see #toByteArray()
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link RegionInfo#toDelimitedByteArray(RegionInfo)}.
    */
@@ -791,8 +795,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get the descriptive name as {@link RegionState} does it but with hidden startkey optionally nn
+   * Get the descriptive name as {@link RegionState} does it but with hidden startkey optionally
-   * * @return descriptive string
+   * @return descriptive string
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             RegionInfoDisplay#getDescriptiveNameFromRegionStateForDisplay(RegionState,
    *             Configuration) over in hbase-server module.
@@ -805,7 +809,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get the end key for display. Optionally hide the real end key. nn * @return the endkey
+   * Get the end key for display. Optionally hide the real end key.
+   * @return the endkey
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             RegionInfoDisplay#getEndKeyForDisplay(RegionInfo, Configuration) over in
    *             hbase-server module.
@@ -817,7 +822,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get the start key for display. Optionally hide the real start key. nn * @return the startkey
+   * Get the start key for display. Optionally hide the real start key.
+   * @return the startkey
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             RegionInfoDisplay#getStartKeyForDisplay(RegionInfo, Configuration) over in
    *             hbase-server module.
@@ -829,8 +835,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get the region name for display. Optionally hide the start key. nn * @return region name as
+   * Get the region name for display. Optionally hide the start key.
-   * String
+   * @return region name as String
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             RegionInfoDisplay#getRegionNameAsStringForDisplay(RegionInfo, Configuration) over
    *             in hbase-server module.
@@ -842,7 +848,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get the region name for display. Optionally hide the start key. nn * @return region name bytes
+   * Get the region name for display. Optionally hide the start key.
+   * @return region name bytes
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             RegionInfoDisplay#getRegionNameForDisplay(RegionInfo, Configuration) over in
    *             hbase-server module.
@@ -855,9 +862,10 @@ public class HRegionInfo implements RegionInfo {
 
   /**
    * Parses an HRegionInfo instance from the passed in stream. Presumes the HRegionInfo was
-   * serialized to the stream with {@link #toDelimitedByteArray()} n * @return An instance of
+   * serialized to the stream with {@link #toDelimitedByteArray()}
-   * HRegionInfo. n * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
+   * @return An instance of HRegionInfo.
-   * {@link RegionInfo#parseFrom(DataInputStream)}.
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
+   *             {@link RegionInfo#parseFrom(DataInputStream)}.
    */
   @Deprecated
   @InterfaceAudience.Private
@@ -885,8 +893,8 @@ public class HRegionInfo implements RegionInfo {
    * to EOF which may not be what you want). {@link #parseDelimitedFrom(byte[], int, int)} can be
    * used to read back the instances.
    * @param infos HRegionInfo objects to serialize
-   * @return This instance serialized as a delimited protobuf w/ a magic pb prefix. n * @see
+   * @return This instance serialized as a delimited protobuf w/ a magic pb prefix.
-   *         #toByteArray()
+   * @see #toByteArray()
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link RegionInfo#toDelimitedByteArray(RegionInfo...)}.
    */
@@ -927,7 +935,8 @@ public class HRegionInfo implements RegionInfo {
   }
 
   /**
-   * Check whether two regions are adjacent nn * @return true if two regions are adjacent
+   * Check whether two regions are adjacent
+   * @return true if two regions are adjacent
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link org.apache.hadoop.hbase.client.RegionInfo#areAdjacent(RegionInfo, RegionInfo)}.
    */

hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionLocation.java

@@ -82,7 +82,7 @@ public class HRegionLocation implements Comparable<HRegionLocation> {
   }
 
   /**
-   * @return Immutable HRegionInfo
+   * Returns immutable HRegionInfo
    * @deprecated Since 2.0.0. Will remove in 3.0.0. Use {@link #getRegion()}} instead.
    */
   @Deprecated
@@ -90,9 +90,7 @@ public class HRegionLocation implements Comparable<HRegionLocation> {
     return regionInfo == null ? null : new ImmutableHRegionInfo(regionInfo);
   }
 
-  /**
+  /** Returns regionInfo */
-   * n
-   */
   public RegionInfo getRegion() {
     return regionInfo;
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java

@@ -356,7 +356,7 @@ public class HTableDescriptor implements TableDescriptor, Comparable<HTableDescr
   }
 
   /**
-   * Get the name of the table n
+   * Get the name of the table
    */
   @Override
   public TableName getTableName() {
@@ -728,7 +728,7 @@ public class HTableDescriptor implements TableDescriptor, Comparable<HTableDescr
    * org.apache.hadoop.hbase.coprocessor.RegionCoprocessor. It won't check if the class can be
    * loaded or not. Whether a coprocessor is loadable or not will be determined when a region is
    * opened.
-   * @param className Full class name. n
+   * @param className Full class name.
    */
   public HTableDescriptor addCoprocessor(String className) throws IOException {
     getDelegateeForModification().setCoprocessor(className);
@@ -744,7 +744,7 @@ public class HTableDescriptor implements TableDescriptor, Comparable<HTableDescr
    *                    classloader.
    * @param className   Full class name.
    * @param priority    Priority
-   * @param kvs         Arbitrary key-value parameter pairs passed into the coprocessor. n
+   * @param kvs         Arbitrary key-value parameter pairs passed into the coprocessor.
    */
   public HTableDescriptor addCoprocessor(String className, Path jarFilePath, int priority,
     final Map<String, String> kvs) throws IOException {
@@ -760,7 +760,7 @@ public class HTableDescriptor implements TableDescriptor, Comparable<HTableDescr
    * loaded or not. Whether a coprocessor is loadable or not will be determined when a region is
    * opened.
    * @param specStr The Coprocessor specification all in in one String formatted so matches
-   *                {@link HConstants#CP_HTD_ATTR_VALUE_PATTERN} n
+   *                {@link HConstants#CP_HTD_ATTR_VALUE_PATTERN}
    */
   public HTableDescriptor addCoprocessorWithSpec(final String specStr) throws IOException {
     getDelegateeForModification().setCoprocessorWithSpec(specStr);
@@ -844,8 +844,8 @@ public class HTableDescriptor implements TableDescriptor, Comparable<HTableDescr
   /**
    * Parse the serialized representation of a {@link HTableDescriptor}
    * @param bytes A pb serialized {@link HTableDescriptor} instance with pb magic prefix
-   * @return An instance of {@link HTableDescriptor} made from <code>bytes</code> nn * @see
+   * @return An instance of {@link HTableDescriptor} made from <code>bytes</code>
-   *         #toByteArray()
+   * @see #toByteArray()
    */
   public static HTableDescriptor parseFrom(final byte[] bytes)
     throws DeserializationException, IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/NotAllMetaRegionsOnlineException.java

@@ -34,8 +34,7 @@ public class NotAllMetaRegionsOnlineException extends DoNotRetryIOException {
   }
 
   /**
-   * n
+   *   */
-   */
   public NotAllMetaRegionsOnlineException(String message) {
     super(message);
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java

@@ -393,7 +393,7 @@ public class ServerLoad implements ServerMetrics {
   }
 
   /**
-   * Call directly from client such as hbase shell n
+   * Call directly from client such as hbase shell
    */
   @Override
   public ReplicationLoadSink getReplicationLoadSink() {

hbase-client/src/main/java/org/apache/hadoop/hbase/ServerMetrics.java

@@ -70,7 +70,7 @@ public interface ServerMetrics {
   Map<String, List<ReplicationLoadSource>> getReplicationLoadSourceMap();
 
   /**
-   * Call directly from client such as hbase shell n
+   * Call directly from client such as hbase shell
    */
   @Nullable
   ReplicationLoadSink getReplicationLoadSink();

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java

@@ -533,9 +533,10 @@ public interface Admin extends Abortable, Closeable {
    * Disable table and wait on completion. May timeout eventually. Use
    * {@link #disableTableAsync(org.apache.hadoop.hbase.TableName)} and
    * {@link #isTableDisabled(org.apache.hadoop.hbase.TableName)} instead. The table has to be in
-   * enabled state for it to be disabled. n * @throws IOException There could be couple types of
+   * enabled state for it to be disabled.
-   * IOException TableNotFoundException means the table doesn't exist. TableNotEnabledException
+   * @throws IOException There could be couple types of IOException TableNotFoundException means the
-   * means the table isn't in enabled state.
+   *                     table doesn't exist. TableNotEnabledException means the table isn't in
+   *                     enabled state.
    */
   default void disableTable(TableName tableName) throws IOException {
     get(disableTableAsync(tableName), getSyncWaitTimeout(), TimeUnit.MILLISECONDS);
@@ -934,7 +935,7 @@ public interface Admin extends Abortable, Closeable {
    * then it returns. It does not wait on the completion of Compaction (it can take a while).
    * @param tableName   table to compact
    * @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
-   * @throws IOException if a remote or network exception occurs n
+   * @throws IOException if a remote or network exception occurs
    */
   void compact(TableName tableName, CompactType compactType)
     throws IOException, InterruptedException;
@@ -946,7 +947,7 @@ public interface Admin extends Abortable, Closeable {
    * @param tableName    table to compact
    * @param columnFamily column family within a table
    * @param compactType  {@link org.apache.hadoop.hbase.client.CompactType}
-   * @throws IOException if not a mob column family or if a remote or network exception occurs n
+   * @throws IOException if not a mob column family or if a remote or network exception occurs
    */
   void compact(TableName tableName, byte[] columnFamily, CompactType compactType)
     throws IOException, InterruptedException;
@@ -995,7 +996,7 @@ public interface Admin extends Abortable, Closeable {
    * while).
    * @param tableName   table to compact
    * @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
-   * @throws IOException if a remote or network exception occurs n
+   * @throws IOException if a remote or network exception occurs
    */
   void majorCompact(TableName tableName, CompactType compactType)
     throws IOException, InterruptedException;
@@ -1007,7 +1008,7 @@ public interface Admin extends Abortable, Closeable {
    * @param tableName    table to compact
    * @param columnFamily column family within a table
    * @param compactType  {@link org.apache.hadoop.hbase.client.CompactType}
-   * @throws IOException if not a mob column family or if a remote or network exception occurs n
+   * @throws IOException if not a mob column family or if a remote or network exception occurs
    */
   void majorCompact(TableName tableName, byte[] columnFamily, CompactType compactType)
     throws IOException, InterruptedException;
@@ -1018,10 +1019,10 @@ public interface Admin extends Abortable, Closeable {
    * can take a while).
    * @param sn    the region server name
    * @param major if it's major compaction
-   * @throws IOException if a remote or network exception occurs n * @deprecated As of release
+   * @throws IOException if a remote or network exception occurs
-   *                     2.0.0, this will be removed in HBase 3.0.0. Use
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use
-   *                     {@link #compactRegionServer(ServerName)} or
+   *             {@link #compactRegionServer(ServerName)} or
-   *                     {@link #majorCompactRegionServer(ServerName)}.
+   *             {@link #majorCompactRegionServer(ServerName)}.
    */
   @Deprecated
   default void compactRegionServer(ServerName sn, boolean major)
@@ -2668,7 +2669,7 @@ public interface Admin extends Abortable, Closeable {
 
   /**
    * Return the set of supported security capabilities.
-   * @throws IOException if a remote or network exception occurs n
+   * @throws IOException if a remote or network exception occurs
    */
   List<SecurityCapability> getSecurityCapabilities() throws IOException;
 
@@ -3012,7 +3013,7 @@ public interface Admin extends Abortable, Closeable {
    * Clear compacting queues on a regionserver.
    * @param serverName the region server name
    * @param queues     the set of queue name
-   * @throws IOException if a remote or network exception occurs n
+   * @throws IOException if a remote or network exception occurs
    */
   void clearCompactionQueues(ServerName serverName, Set<String> queues)
     throws IOException, InterruptedException;

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Append.java

@@ -61,7 +61,7 @@ public class Append extends Mutation {
    * <p>
    * This range is used as [minStamp, maxStamp).
    * @param minStamp minimum timestamp value, inclusive
-   * @param maxStamp maximum timestamp value, exclusive n
+   * @param maxStamp maximum timestamp value, exclusive
    */
   public Append setTimeRange(long minStamp, long maxStamp) {
     tr = new TimeRange(minStamp, maxStamp);
@@ -69,7 +69,7 @@ public class Append extends Mutation {
   }
 
   /**
-   * Gets the TimeRange used for this append. n
+   * Gets the TimeRange used for this append.
    */
   public TimeRange getTimeRange() {
     return this.tr;
@@ -81,7 +81,7 @@ public class Append extends Mutation {
   }
 
   /**
-   * n * True (default) if the append operation should return the results. A client that is not
+   * True (default) if the append operation should return the results. A client that is not
    * interested in the result can save network bandwidth setting this to false.
    */
   @Override
@@ -120,7 +120,7 @@ public class Append extends Mutation {
    * Create a Append operation for the specified row.
    * <p>
    * At least one column must be appended to.
-   * @param rowArray Makes a copy out of this buffer. nn
+   * @param rowArray Makes a copy out of this buffer.
    */
   public Append(final byte[] rowArray, final int rowOffset, final int rowLength) {
     checkRow(rowArray, rowOffset, rowLength);
@@ -142,9 +142,9 @@ public class Append extends Mutation {
    * Add the specified column and value to this Append operation.
    * @param family    family name
    * @param qualifier column qualifier
-   * @param value     value to append to specified column n * @deprecated As of release 2.0.0, this
+   * @param value     value to append to specified column
-   *                  will be removed in HBase 3.0.0. Use {@link #addColumn(byte[], byte[], byte[])}
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use
-   *                  instead
+   *             {@link #addColumn(byte[], byte[], byte[])} instead
    */
   @Deprecated
   public Append add(byte[] family, byte[] qualifier, byte[] value) {
@@ -155,7 +155,7 @@ public class Append extends Mutation {
    * Add the specified column and value to this Append operation.
    * @param family    family name
    * @param qualifier column qualifier
-   * @param value     value to append to specified column n
+   * @param value     value to append to specified column
    */
   public Append addColumn(byte[] family, byte[] qualifier, byte[] value) {
     KeyValue kv = new KeyValue(this.row, family, qualifier, this.ts, KeyValue.Type.Put, value);
@@ -163,7 +163,8 @@ public class Append extends Mutation {
   }
 
   /**
-   * Add column and value to this Append operation. n * @return This instance
+   * Add column and value to this Append operation.
+   * @return This instance
    */
   @SuppressWarnings("unchecked")
   @Override

hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java

@@ -206,7 +206,7 @@ public interface AsyncAdmin {
   CompletableFuture<Void> enableTable(TableName tableName);
 
   /**
-   * Disable a table. The table has to be in enabled state for it to be disabled. n
+   * Disable a table. The table has to be in enabled state for it to be disabled.
    */
   CompletableFuture<Void> disableTable(TableName tableName);
 
@@ -1134,7 +1134,7 @@ public interface AsyncAdmin {
   CompletableFuture<Void> stopMaster();
 
   /**
-   * Stop the designated regionserver. n
+   * Stop the designated regionserver.
    */
   CompletableFuture<Void> stopRegionServer(ServerName serverName);
 
@@ -1336,8 +1336,8 @@ public interface AsyncAdmin {
   CompletableFuture<Boolean> normalize(NormalizeTableFilterParams ntfp);
 
   /**
-   * Turn the cleaner chore on/off. n * @return Previous cleaner state wrapped by a
+   * Turn the cleaner chore on/off.
-   * {@link CompletableFuture}
+   * @return Previous cleaner state wrapped by a {@link CompletableFuture}
    */
   CompletableFuture<Boolean> cleanerChoreSwitch(boolean on);
 
@@ -1356,8 +1356,8 @@ public interface AsyncAdmin {
   CompletableFuture<Boolean> runCleanerChore();
 
   /**
-   * Turn the catalog janitor on/off. n * @return the previous state wrapped by a
+   * Turn the catalog janitor on/off.
-   * {@link CompletableFuture}
+   * @return the previous state wrapped by a {@link CompletableFuture}
    */
   CompletableFuture<Boolean> catalogJanitorSwitch(boolean on);
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncConnectionImpl.java

@@ -179,7 +179,7 @@ public class AsyncConnectionImpl implements AsyncConnection {
   }
 
   /**
-   * If choreService has not been created yet, create the ChoreService. n
+   * If choreService has not been created yet, create the ChoreService.
    */
   synchronized ChoreService getChoreService() {
     if (isClosed()) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java

@@ -198,7 +198,7 @@ class AsyncProcess {
    * The submitted task may be not accomplished at all if there are too many running tasks or other
    * limits.
    * @param <CResult> The class to cast the result
-   * @param task      The setting and data n
+   * @param task      The setting and data
    */
   public <CResult> AsyncRequestFuture submit(AsyncProcessTask<CResult> task)
     throws InterruptedIOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClusterConnection.java

@@ -57,8 +57,8 @@ public interface ClusterConnection extends Connection {
   /**
    * Use this api to check if the table has been created with the specified number of splitkeys
    * which was used while creating the given table. Note : If this api is used after a table's
-   * region gets splitted, the api may return false. n * tableName n * splitKeys used while creating
+   * region gets splitted, the api may return false. tableName splitKeys used while creating table
-   * table n * if a remote or network exception occurs
+   * if a remote or network exception occurs
    */
   boolean isTableAvailable(TableName tableName, byte[][] splitKeys) throws IOException;
 
@@ -261,7 +261,7 @@ public interface ClusterConnection extends Connection {
    * Returns a new RpcRetryingCallerFactory from the given {@link Configuration}. This
    * RpcRetryingCallerFactory lets the users create {@link RpcRetryingCaller}s which can be
    * intercepted with the configured {@link RetryingCallerInterceptor}
-   * @param conf configuration n
+   * @param conf configuration
    */
   RpcRetryingCallerFactory getNewRpcRetryingCallerFactory(Configuration conf);
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptor.java

@@ -133,7 +133,7 @@ public interface ColumnFamilyDescriptor {
   int getMinVersions();
 
   /**
-   * Get the mob compact partition policy for this family n
+   * Get the mob compact partition policy for this family
    */
   MobCompactPartitionPolicy getMobCompactPartitionPolicy();
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.java

@@ -866,8 +866,8 @@ public class ColumnFamilyDescriptorBuilder {
 
     /**
      * Set whether the tags should be compressed along with DataBlockEncoding. When no
-     * DataBlockEncoding is been used, this is having no effect. n * @return this (for chained
+     * DataBlockEncoding is been used, this is having no effect.
-     * invocation)
+     * @return this (for chained invocation)
      */
     public ModifyableColumnFamilyDescriptor setCompressTags(boolean compressTags) {
       return setValue(COMPRESS_TAGS_BYTES, String.valueOf(compressTags));

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java

@@ -633,7 +633,7 @@ public class ConnectionImplementation implements ClusterConnection, Closeable {
   }
 
   /**
-   * If choreService has not been created yet, create the ChoreService. n
+   * If choreService has not been created yet, create the ChoreService.
    */
   synchronized ChoreService getChoreService() {
     if (choreService == null) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Delete.java

@@ -95,7 +95,7 @@ public class Delete extends Mutation {
    * <p>
    * This timestamp is ONLY used for a delete row operation. If specifying families or columns, you
    * must specify each timestamp individually.
-   * @param row We make a local copy of this passed in row. nn
+   * @param row We make a local copy of this passed in row.
    */
   public Delete(final byte[] row, final int rowOffset, final int rowLength) {
     this(row, rowOffset, rowLength, HConstants.LATEST_TIMESTAMP);
@@ -139,8 +139,9 @@ public class Delete extends Mutation {
   /**
    * Advanced use only. Add an existing delete marker to this Delete object.
    * @param kv An existing KeyValue of type "delete".
-   * @return this for invocation chaining n * @deprecated As of release 2.0.0, this will be removed
+   * @return this for invocation chaining
-   *         in HBase 3.0.0. Use {@link #add(Cell)} instead
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use {@link #add(Cell)}
+   *             instead
    */
   @SuppressWarnings("unchecked")
   @Deprecated
@@ -151,7 +152,7 @@ public class Delete extends Mutation {
   /**
    * Add an existing delete marker to this Delete object.
    * @param cell An existing cell of type "delete".
-   * @return this for invocation chaining n
+   * @return this for invocation chaining
    */
   @Override
   public Delete add(Cell cell) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Get.java

@@ -87,7 +87,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Copy-constructor n
+   * Copy-constructor
    */
   public Get(Get get) {
     this(get.getRow());
@@ -126,7 +126,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Create a Get operation for the specified row. nnn
+   * Create a Get operation for the specified row.
    */
   public Get(byte[] row, int rowOffset, int rowLength) {
     Mutation.checkRow(row, rowOffset, rowLength);
@@ -134,7 +134,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Create a Get operation for the specified row. n
+   * Create a Get operation for the specified row.
    */
   public Get(ByteBuffer row) {
     Mutation.checkRow(row);
@@ -208,7 +208,8 @@ public class Get extends Query implements Row {
   /**
    * Get versions of columns only within the specified timestamp range, [minStamp, maxStamp).
    * @param minStamp minimum timestamp value, inclusive
-   * @param maxStamp maximum timestamp value, exclusive n * @return this for invocation chaining
+   * @param maxStamp maximum timestamp value, exclusive
+   * @return this for invocation chaining
    */
   public Get setTimeRange(long minStamp, long maxStamp) throws IOException {
     tr = new TimeRange(minStamp, maxStamp);
@@ -351,7 +352,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Method for retrieving the get's row n
+   * Method for retrieving the get's row
    */
   @Override
   public byte[] getRow() {
@@ -383,7 +384,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Method for retrieving the get's TimeRange n
+   * Method for retrieving the get's TimeRange
    */
   public TimeRange getTimeRange() {
     return this.tr;
@@ -414,7 +415,7 @@ public class Get extends Query implements Row {
   }
 
   /**
-   * Method for retrieving the get's familyMap n
+   * Method for retrieving the get's familyMap
    */
   public Map<byte[], NavigableSet<byte[]>> getFamilyMap() {
     return this.familyMap;
@@ -422,7 +423,7 @@ public class Get extends Query implements Row {
 
   /**
    * Compile the table and column family (i.e. schema) information into a String. Useful for parsing
-   * and aggregation by debugging, logging, and administration tools. n
+   * and aggregation by debugging, logging, and administration tools.
    */
   @Override
   public Map<String, Object> getFingerprint() {
@@ -439,7 +440,7 @@ public class Get extends Query implements Row {
    * Compile the details beyond the scope of getFingerprint (row, columns, timestamps, etc.) into a
    * Map along with the fingerprinted information. Useful for debugging, logging, and administration
    * tools.
-   * @param maxCols a limit on the number of columns output prior to truncation n
+   * @param maxCols a limit on the number of columns output prior to truncation
    */
   @Override
   public Map<String, Object> toMap(int maxCols) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java

@@ -1193,7 +1193,7 @@ public class HBaseAdmin implements Admin {
   }
 
   /**
-   * n * @return List of {@link HRegionInfo}.
+   * @return List of {@link HRegionInfo}.
    * @throws IOException if a remote or network exception occurs
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link #getRegions(ServerName)}.
@@ -1417,7 +1417,7 @@ public class HBaseAdmin implements Admin {
    * @param regionName   region to compact
    * @param columnFamily column family within a table or region
    * @param major        True if we are to do a major compaction.
-   * @throws IOException if a remote or network exception occurs n
+   * @throws IOException if a remote or network exception occurs
    */
   private void compactRegion(final byte[] regionName, final byte[] columnFamily,
     final boolean major) throws IOException {
@@ -2369,7 +2369,7 @@ public class HBaseAdmin implements Admin {
   }
 
   /**
-   * n * @return List of {@link HRegionInfo}.
+   * @return List of {@link HRegionInfo}.
    * @throws IOException if a remote or network exception occurs
    * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0 Use
    *             {@link #getRegions(TableName)}.

hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTableMultiplexer.java

@@ -129,8 +129,8 @@ public class HTableMultiplexer {
 
   /**
    * The put request will be buffered by its corresponding buffer queue. Return false if the queue
-   * is already full. nn * @return true if the request can be accepted by its corresponding buffer
+   * is already full.
-   * queue.
+   * @return true if the request can be accepted by its corresponding buffer queue.
    */
   public boolean put(TableName tableName, final Put put) {
     return put(tableName, put, this.maxAttempts);
@@ -138,7 +138,8 @@ public class HTableMultiplexer {
 
   /**
    * The puts request will be buffered by their corresponding buffer queue. Return the list of puts
-   * which could not be queued. nn * @return the list of puts which could not be queued
+   * which could not be queued.
+   * @return the list of puts which could not be queued
    */
   public List<Put> put(TableName tableName, final List<Put> puts) {
     if (puts == null) return null;

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ImmutableHColumnDescriptor.java

@@ -28,7 +28,7 @@ import org.apache.yetus.audience.InterfaceAudience;
 @InterfaceAudience.Private
 public class ImmutableHColumnDescriptor extends HColumnDescriptor {
   /*
-   * Create an unmodifyable copy of an HColumnDescriptor n
+   * Create an unmodifyable copy of an HColumnDescriptor
    */
   ImmutableHColumnDescriptor(final HColumnDescriptor desc) {
     super(desc, false);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ImmutableHRegionInfo.java

@@ -28,7 +28,7 @@ import org.apache.yetus.audience.InterfaceAudience;
 public class ImmutableHRegionInfo extends HRegionInfo {
 
   /*
-   * Creates an immutable copy of an HRegionInfo. n
+   * Creates an immutable copy of an HRegionInfo.
    */
   public ImmutableHRegionInfo(RegionInfo other) {
     super(other);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ImmutableHTableDescriptor.java

@@ -41,7 +41,7 @@ public class ImmutableHTableDescriptor extends HTableDescriptor {
   }
 
   /*
-   * Create an unmodifyable copy of an HTableDescriptor n
+   * Create an unmodifyable copy of an HTableDescriptor
    */
   public ImmutableHTableDescriptor(final HTableDescriptor desc) {
     super(desc, false);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Increment.java

@@ -92,7 +92,8 @@ public class Increment extends Mutation {
 
   /**
    * Add the specified KeyValue to this operation.
-   * @param cell individual Cell n * @throws java.io.IOException e
+   * @param cell individual Cell
+   * @throws java.io.IOException e
    */
   @Override
   public Increment add(Cell cell) throws IOException {
@@ -121,7 +122,7 @@ public class Increment extends Mutation {
   }
 
   /**
-   * Gets the TimeRange used for this increment. n
+   * Gets the TimeRange used for this increment.
    */
   public TimeRange getTimeRange() {
     return this.tr;
@@ -139,7 +140,7 @@ public class Increment extends Mutation {
    * This range is used as [minStamp, maxStamp).
    * @param minStamp minimum timestamp value, inclusive
    * @param maxStamp maximum timestamp value, exclusive
-   * @throws IOException if invalid time range n
+   * @throws IOException if invalid time range
    */
   public Increment setTimeRange(long minStamp, long maxStamp) throws IOException {
     tr = new TimeRange(minStamp, maxStamp);
@@ -209,8 +210,7 @@ public class Increment extends Mutation {
   }
 
   /**
-   * n
+   *   */
-   */
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();

hbase-client/src/main/java/org/apache/hadoop/hbase/client/MasterCallable.java

@@ -107,7 +107,7 @@ abstract class MasterCallable<V> implements RetryingCallable<V>, Closeable {
    * configured to make this rpc call, use getRpcController(). We are trying to contain
    * rpcController references so we don't pollute codebase with protobuf references; keep the
    * protobuf references contained and only present in a few classes rather than all about the code
-   * base. n
+   * base.
    */
   protected abstract V rpcCall() throws Exception;
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/MetaCache.java

@@ -186,9 +186,7 @@ public class MetaCache {
     }
   }
 
-  /**
+  /** Returns Map of cached locations for passed <code>tableName</code> */
-   * n * @return Map of cached locations for passed <code>tableName</code>
-   */
   private ConcurrentNavigableMap<byte[], RegionLocations>
     getTableLocations(final TableName tableName) {
     // find the map of cached locations for this table
@@ -287,7 +285,7 @@ public class MetaCache {
 
   /**
    * Delete a cached location, no matter what it is. Called when we were told to not use cache.
-   * @param tableName tableName n
+   * @param tableName tableName
    */
   public void clearCache(final TableName tableName, final byte[] row) {
     ConcurrentMap<byte[], RegionLocations> tableLocations = getTableLocations(tableName);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/MutableRegionInfo.java

@@ -179,7 +179,7 @@ class MutableRegionInfo implements RegionInfo {
   }
 
   /**
-   * Get current table name of the region n
+   * Get current table name of the region
    */
   @Override
   public TableName getTable() {
@@ -231,7 +231,7 @@ class MutableRegionInfo implements RegionInfo {
 
   /**
    * Change the split status flag.
-   * @param split set split status n
+   * @param split set split status
    */
   public MutableRegionInfo setSplit(boolean split) {
     this.split = split;
@@ -252,7 +252,7 @@ class MutableRegionInfo implements RegionInfo {
   /**
    * The parent of a region split is offline while split daughters hold references to the parent.
    * Offlined regions are closed.
-   * @param offLine Set online/offline status. n
+   * @param offLine Set online/offline status.
    */
   public MutableRegionInfo setOffline(boolean offLine) {
     this.offLine = offLine;

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Mutation.java

@@ -201,7 +201,7 @@ public abstract class Mutation extends OperationWithAttributes
    * Compile the details beyond the scope of getFingerprint (row, columns, timestamps, etc.) into a
    * Map along with the fingerprinted information. Useful for debugging, logging, and administration
    * tools.
-   * @param maxCols a limit on the number of columns output prior to truncation n
+   * @param maxCols a limit on the number of columns output prior to truncation
    */
   @Override
   public Map<String, Object> toMap(int maxCols) {
@@ -264,7 +264,7 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Set the durability for this mutation n
+   * Set the durability for this mutation
    */
   public Mutation setDurability(Durability d) {
     this.durability = d;
@@ -277,7 +277,7 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Method for retrieving the put's familyMap n
+   * Method for retrieving the put's familyMap
    */
   public NavigableMap<byte[], List<Cell>> getFamilyCellMap() {
     return this.familyMap;
@@ -305,7 +305,7 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Method for retrieving the delete's row n
+   * Method for retrieving the delete's row
    */
   @Override
   public byte[] getRow() {
@@ -323,8 +323,9 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Method for retrieving the timestamp n * @deprecated As of release 2.0.0, this will be removed
+   * Method for retrieving the timestamp
-   * in HBase 3.0.0. Use {@link #getTimestamp()} instead
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use
+   *             {@link #getTimestamp()} instead
    */
   @Deprecated
   public long getTimeStamp() {
@@ -332,7 +333,7 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Method for retrieving the timestamp. n
+   * Method for retrieving the timestamp.
    */
   public long getTimestamp() {
     return this.ts;
@@ -368,7 +369,7 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Sets the visibility expression associated with cells in this Mutation. n
+   * Sets the visibility expression associated with cells in this Mutation.
    */
   public Mutation setCellVisibility(CellVisibility expression) {
     this.setAttribute(VisibilityConstants.VISIBILITY_LABELS_ATTR_KEY,
@@ -384,8 +385,8 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Create a protocol buffer CellVisibility based on a client CellVisibility. n * @return a
+   * Create a protocol buffer CellVisibility based on a client CellVisibility.
-   * protocol buffer CellVisibility
+   * @return a protocol buffer CellVisibility
    */
   static ClientProtos.CellVisibility toCellVisibility(CellVisibility cellVisibility) {
     ClientProtos.CellVisibility.Builder builder = ClientProtos.CellVisibility.newBuilder();
@@ -394,8 +395,8 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Convert a protocol buffer CellVisibility to a client CellVisibility n * @return the converted
+   * Convert a protocol buffer CellVisibility to a client CellVisibility
-   * client CellVisibility
+   * @return the converted client CellVisibility
    */
   private static CellVisibility toCellVisibility(ClientProtos.CellVisibility proto) {
     if (proto == null) return null;
@@ -403,8 +404,8 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * Convert a protocol buffer CellVisibility bytes to a client CellVisibility n * @return the
+   * Convert a protocol buffer CellVisibility bytes to a client CellVisibility
-   * converted client CellVisibility n
+   * @return the converted client CellVisibility
    */
   private static CellVisibility toCellVisibility(byte[] protoBytes)
     throws DeserializationException {
@@ -511,7 +512,7 @@ public abstract class Mutation extends OperationWithAttributes
 
   /**
    * Set the TTL desired for the result of the mutation, in milliseconds.
-   * @param ttl the TTL desired for the result of the mutation, in milliseconds n
+   * @param ttl the TTL desired for the result of the mutation, in milliseconds
    */
   public Mutation setTTL(long ttl) {
     setAttribute(OP_ATTRIBUTE_TTL, Bytes.toBytes(ttl));
@@ -688,8 +689,9 @@ public abstract class Mutation extends OperationWithAttributes
   }
 
   /**
-   * @param row Row to check nn * @throws IllegalArgumentException Thrown if <code>row</code> is
+   * @param row Row to check
-   *            empty or null or &gt; {@link HConstants#MAX_ROW_LENGTH}
+   * @throws IllegalArgumentException Thrown if <code>row</code> is empty or null or &gt;
+   *                                  {@link HConstants#MAX_ROW_LENGTH}
    * @return <code>row</code>
    */
   static byte[] checkRow(final byte[] row, final int offset, final int length) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Operation.java

@@ -94,7 +94,7 @@ public abstract class Operation {
   /**
    * Produces a string representation of this Operation. It defaults to a JSON representation, but
    * falls back to a string representation of the fingerprint and details in the case of a JSON
-   * encoding failure. n
+   * encoding failure.
    */
   @Override
   public String toString() {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/OperationWithAttributes.java

@@ -106,7 +106,7 @@ public abstract class OperationWithAttributes extends Operation implements Attri
    * This method allows you to set an identifier on an operation. The original motivation for this
    * was to allow the identifier to be used in slow query logging, but this could obviously be
    * useful in other places. One use of this could be to put a class.method identifier in here to
-   * see where the slow query is coming from. n * id to set for the scan
+   * see where the slow query is coming from. id to set for the scan
    */
   public OperationWithAttributes setId(String id) {
     setAttribute(ID_ATRIBUTE, Bytes.toBytes(id));

hbase-client/src/main/java/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.java

@@ -132,7 +132,7 @@ class PreemptiveFastFailInterceptor extends RetryingCallerInterceptor {
   /**
    * Handles failures encountered when communicating with a server. Updates the FailureInfo in
    * repeatedFailuresMap to reflect the failure. Throws RepeatedConnectException if the client is in
-   * Fast fail mode. nn * - the throwable to be handled. n
+   * Fast fail mode. - the throwable to be handled.
    */
   protected void handleFailureToServer(ServerName serverName, Throwable t) {
     if (serverName == null || t == null) {
@@ -201,7 +201,8 @@ class PreemptiveFastFailInterceptor extends RetryingCallerInterceptor {
   /**
    * Checks to see if we are in the Fast fail mode for requests to the server. If a client is unable
    * to contact a server for more than fastFailThresholdMilliSec the client will get into fast fail
-   * mode. n * @return true if the client is in fast fail mode for the server.
+   * mode.
+   * @return true if the client is in fast fail mode for the server.
    */
   private boolean inFastFailMode(ServerName server) {
     FailureInfo fInfo = repeatedFailuresMap.get(server);
@@ -225,7 +226,7 @@ class PreemptiveFastFailInterceptor extends RetryingCallerInterceptor {
    * Check to see if the client should try to connnect to the server, inspite of knowing that it is
    * in the fast fail mode. The idea here is that we want just one client thread to be actively
    * trying to reconnect, while all the other threads trying to reach the server will short circuit.
-   * n * @return true if the client should try to connect to the server.
+   * @return true if the client should try to connect to the server.
    */
   protected boolean shouldRetryInspiteOfFastFail(FailureInfo fInfo) {
     // We believe that the server is down, But, we want to have just one
@@ -246,7 +247,7 @@ class PreemptiveFastFailInterceptor extends RetryingCallerInterceptor {
   }
 
   /**
-   * This function updates the Failure info for a particular server after the attempt to nnnn
+   * This function updates the Failure info for a particular server after the attempt to
    */
   private void updateFailureInfoForServer(ServerName server, FailureInfo fInfo, boolean didTry,
     boolean couldNotCommunicate, boolean retryDespiteFastFailMode) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Put.java

@@ -60,7 +60,7 @@ public class Put extends Mutation implements HeapSize {
   }
 
   /**
-   * We make a copy of the passed in row key to keep local. nnn
+   * We make a copy of the passed in row key to keep local.
    */
   public Put(byte[] rowArray, int rowOffset, int rowLength) {
     this(rowArray, rowOffset, rowLength, HConstants.LATEST_TIMESTAMP);
@@ -88,7 +88,7 @@ public class Put extends Mutation implements HeapSize {
   }
 
   /**
-   * We make a copy of the passed in row key to keep local. nnnn
+   * We make a copy of the passed in row key to keep local.
    */
   public Put(byte[] rowArray, int rowOffset, int rowLength, long ts) {
     checkRow(rowArray, rowOffset, rowLength);
@@ -155,7 +155,7 @@ public class Put extends Mutation implements HeapSize {
    * Add the specified column and value to this Put operation.
    * @param family    family name
    * @param qualifier column qualifier
-   * @param value     column value n
+   * @param value     column value
    */
   public Put addColumn(byte[] family, byte[] qualifier, byte[] value) {
     return addColumn(family, qualifier, this.ts, value);
@@ -178,7 +178,7 @@ public class Put extends Mutation implements HeapSize {
    * @param family    family name
    * @param qualifier column qualifier
    * @param ts        version timestamp
-   * @param value     column value n
+   * @param value     column value
    */
   public Put addColumn(byte[] family, byte[] qualifier, long ts, byte[] value) {
     if (ts < 0) {
@@ -222,7 +222,7 @@ public class Put extends Mutation implements HeapSize {
    * @param family    family name
    * @param qualifier column qualifier
    * @param ts        version timestamp
-   * @param value     column value n
+   * @param value     column value
    */
   public Put addColumn(byte[] family, ByteBuffer qualifier, long ts, ByteBuffer value) {
     if (ts < 0) {
@@ -255,7 +255,8 @@ public class Put extends Mutation implements HeapSize {
   /**
    * Add the specified KeyValue to this Put operation. Operation assumes that the passed KeyValue is
    * immutable and its backing array will not be modified for the duration of this Put.
-   * @param cell individual cell n * @throws java.io.IOException e
+   * @param cell individual cell
+   * @throws java.io.IOException e
    */
   @Override
   public Put add(Cell cell) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Query.java

@@ -47,9 +47,6 @@ public abstract class Query extends OperationWithAttributes {
   protected Map<byte[], TimeRange> colFamTimeRangeMap = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
   protected Boolean loadColumnFamiliesOnDemand = null;
 
-  /**
-   * n
-   */
   public Filter getFilter() {
     return filter;
   }
@@ -67,7 +64,7 @@ public abstract class Query extends OperationWithAttributes {
   }
 
   /**
-   * Sets the authorizations to be used by this Query n
+   * Sets the authorizations to be used by this Query
    */
   public Query setAuthorizations(Authorizations authorizations) {
     this.setAttribute(VisibilityConstants.VISIBILITY_LABELS_ATTR_KEY,
@@ -133,7 +130,7 @@ public abstract class Query extends OperationWithAttributes {
    * Specify region replica id where Query will fetch data from. Use this together with
    * {@link #setConsistency(Consistency)} passing {@link Consistency#TIMELINE} to read data from a
    * specific replicaId. <br>
-   * <b> Expert: </b>This is an advanced API exposed. Only use it if you know what you are doing n
+   * <b> Expert: </b>This is an advanced API exposed. Only use it if you know what you are doing
    */
   public Query setReplicaId(int Id) {
     this.targetReplicaId = Id;
@@ -209,7 +206,7 @@ public abstract class Query extends OperationWithAttributes {
    * Column Family time ranges take precedence over the global time range.
    * @param cf       the column family for which you want to restrict
    * @param minStamp minimum timestamp value, inclusive
-   * @param maxStamp maximum timestamp value, exclusive n
+   * @param maxStamp maximum timestamp value, exclusive
    */
 
   public Query setColumnFamilyTimeRange(byte[] cf, long minStamp, long maxStamp) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionAdminServiceCallable.java

@@ -184,7 +184,7 @@ public abstract class RegionAdminServiceCallable<T> implements RetryingCallable<
    * Run RPC call.
    * @param rpcController PayloadCarryingRpcController is a mouthful but it at a minimum is a facade
    *                      on protobuf so we don't have to put protobuf everywhere; we can keep it
-   *                      behind this class. n
+   *                      behind this class.
    */
   protected abstract T call(HBaseRpcController rpcController) throws Exception;
 }

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfoDisplay.java

@@ -59,7 +59,8 @@ public class RegionInfoDisplay {
   }
 
   /**
-   * Get the start key for display. Optionally hide the real start key. nn * @return the startkey
+   * Get the start key for display. Optionally hide the real start key.
+   * @return the startkey
    */
   public static byte[] getStartKeyForDisplay(RegionInfo ri, Configuration conf) {
     boolean displayKey = conf.getBoolean(DISPLAY_KEYS_KEY, true);
@@ -68,15 +69,16 @@ public class RegionInfoDisplay {
   }
 
   /**
-   * Get the region name for display. Optionally hide the start key. nn * @return region name as
+   * Get the region name for display. Optionally hide the start key.
-   * String
+   * @return region name as String
    */
   public static String getRegionNameAsStringForDisplay(RegionInfo ri, Configuration conf) {
     return Bytes.toStringBinary(getRegionNameForDisplay(ri, conf));
   }
 
   /**
-   * Get the region name for display. Optionally hide the start key. nn * @return region name bytes
+   * Get the region name for display. Optionally hide the start key.
+   * @return region name bytes
    */
   public static byte[] getRegionNameForDisplay(RegionInfo ri, Configuration conf) {
     boolean displayKey = conf.getBoolean(DISPLAY_KEYS_KEY, true);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionReplicaUtil.java

@@ -84,7 +84,7 @@ public class RegionReplicaUtil {
   }
 
   /**
-   * Removes the non-default replicas from the passed regions collection n
+   * Removes the non-default replicas from the passed regions collection
    */
   public static void removeNonDefaultRegions(Collection<RegionInfo> regions) {
     Iterator<RegionInfo> iterator = regions.iterator();

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionServerCallable.java

@@ -132,7 +132,7 @@ public abstract class RegionServerCallable<T, S> implements RetryingCallable<T>
    * configured to make this rpc call, use getRpcController(). We are trying to contain
    * rpcController references so we don't pollute codebase with protobuf references; keep the
    * protobuf references contained and only present in a few classes rather than all about the code
-   * base. n
+   * base.
    */
   protected abstract T rpcCall() throws Exception;
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java

@@ -186,7 +186,7 @@ public class Result implements CellScannable, CellScanner {
 
   /**
    * Method for retrieving the row key that corresponds to the row from which this Result was
-   * created. n
+   * created.
    */
   public byte[] getRow() {
     if (this.row == null) {
@@ -227,8 +227,9 @@ public class Result implements CellScannable, CellScanner {
    * or Get) only requested 1 version the list will contain at most 1 entry. If the column did not
    * exist in the result set (either the column does not exist or the column was not selected in the
    * query) the list will be empty. Also see getColumnLatest which returns just a Cell
-   * @param family the family n * @return a list of Cells for this column or empty list if the
+   * @param family the family
-   *               column did not exist in the result set
+   * @return a list of Cells for this column or empty list if the column did not exist in the result
+   *         set
    */
   public List<Cell> getColumnCells(byte[] family, byte[] qualifier) {
     List<Cell> result = new ArrayList<>();
@@ -324,7 +325,7 @@ public class Result implements CellScannable, CellScanner {
   }
 
   /**
-   * The Cell for the most recent timestamp for a given column. nn *
+   * The Cell for the most recent timestamp for a given column.
    * @return the Cell for the column, or null if no value exists in the row or none have been
    *         selected in the query (Get/Scan)
    */
@@ -677,8 +678,7 @@ public class Result implements CellScannable, CellScanner {
   }
 
   /**
-   * n
+   *   */
-   */
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
@@ -800,7 +800,8 @@ public class Result implements CellScannable, CellScanner {
   }
 
   /**
-   * Get total size of raw cells n * @return Total size.
+   * Get total size of raw cells
+   * @return Total size.
    */
   public static long getTotalSizeOfCells(Result result) {
     long size = 0;
@@ -816,7 +817,7 @@ public class Result implements CellScannable, CellScanner {
   /**
    * Copy another Result into this one. Needed for the old Mapred framework
    * @throws UnsupportedOperationException if invoked on instance of EMPTY_RESULT (which is supposed
-   *                                       to be immutable). n
+   *                                       to be immutable).
    */
   public void copyFrom(Result other) {
     checkReadonly();

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RetryingCallerInterceptor.java

@@ -46,20 +46,20 @@ abstract class RetryingCallerInterceptor {
   public abstract RetryingCallerInterceptorContext createEmptyContext();
 
   /**
-   * Call this function in case we caught a failure during retries. n * : The context object that we
+   * Call this function in case we caught a failure during retries. : The context object that we
-   * obtained previously. n * : The exception that we caught in this particular try n
+   * obtained previously. : The exception that we caught in this particular try
    */
   public abstract void handleFailure(RetryingCallerInterceptorContext context, Throwable t)
     throws IOException;
 
   /**
-   * Call this function alongside the actual call done on the callable. nn
+   * Call this function alongside the actual call done on the callable.
    */
   public abstract void intercept(
     RetryingCallerInterceptorContext abstractRetryingCallerInterceptorContext) throws IOException;
 
   /**
-   * Call this function to update at the end of the retry. This is not necessary to happen. n
+   * Call this function to update at the end of the retry. This is not necessary to happen.
    */
   public abstract void updateFailureInfo(RetryingCallerInterceptorContext context);
 

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.java

@@ -38,17 +38,17 @@ abstract class RetryingCallerInterceptorContext {
 
   /**
    * This prepares the context object by populating it with information specific to the
-   * implementation of the {@link RetryingCallerInterceptor} along with which this will be used. n *
+   * implementation of the {@link RetryingCallerInterceptor} along with which this will be used. :
-   * : The {@link RetryingCallable} that contains the information about the call that is being made.
+   * The {@link RetryingCallable} that contains the information about the call that is being made.
    * @return A new {@link RetryingCallerInterceptorContext} object that can be used for use in the
    *         current retrying call
    */
   public abstract RetryingCallerInterceptorContext prepare(RetryingCallable<?> callable);
 
   /**
-   * Telescopic extension that takes which of the many retries we are currently in. n * : The
+   * Telescopic extension that takes which of the many retries we are currently in. : The
-   * {@link RetryingCallable} that contains the information about the call that is being made. n * :
+   * {@link RetryingCallable} that contains the information about the call that is being made. : The
-   * The retry number that we are currently in.
+   * retry number that we are currently in.
    * @return A new context object that can be used for use in the current retrying call
    */
   public abstract RetryingCallerInterceptorContext prepare(RetryingCallable<?> callable, int tries);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RowMutations.java

@@ -39,8 +39,8 @@ public class RowMutations implements Row {
 
   /**
    * Create a {@link RowMutations} with the specified mutations.
-   * @param mutations the mutations to send n * @throws IOException if any row in mutations is
+   * @param mutations the mutations to send
-   *                  different to another
+   * @throws IOException if any row in mutations is different to another
    */
   public static RowMutations of(List<? extends Mutation> mutations) throws IOException {
     if (CollectionUtils.isEmpty(mutations)) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Scan.java

@@ -326,7 +326,7 @@ public class Scan extends Query {
    * Get all columns from the specified family.
    * <p>
    * Overrides previous calls to addColumn for this family.
-   * @param family family name n
+   * @param family family name
    */
   public Scan addFamily(byte[] family) {
     familyMap.remove(family);
@@ -339,7 +339,7 @@ public class Scan extends Query {
    * <p>
    * Overrides previous calls to addFamily for this family.
    * @param family    family name
-   * @param qualifier column qualifier n
+   * @param qualifier column qualifier
    */
   public Scan addColumn(byte[] family, byte[] qualifier) {
     NavigableSet<byte[]> set = familyMap.get(family);
@@ -361,7 +361,7 @@ public class Scan extends Query {
    * @param minStamp minimum timestamp value, inclusive
    * @param maxStamp maximum timestamp value, exclusive
    * @see #setMaxVersions()
-   * @see #setMaxVersions(int) n
+   * @see #setMaxVersions(int)
    */
   public Scan setTimeRange(long minStamp, long maxStamp) throws IOException {
     tr = new TimeRange(minStamp, maxStamp);
@@ -374,8 +374,9 @@ public class Scan extends Query {
    * number of versions beyond the defaut.
    * @param timestamp version timestamp
    * @see #setMaxVersions()
-   * @see #setMaxVersions(int) n * @deprecated As of release 2.0.0, this will be removed in HBase
+   * @see #setMaxVersions(int)
-   *      3.0.0. Use {@link #setTimestamp(long)} instead
+   * @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use
+   *             {@link #setTimestamp(long)} instead
    */
   @Deprecated
   public Scan setTimeStamp(long timestamp) throws IOException {
@@ -388,7 +389,7 @@ public class Scan extends Query {
    * number of versions beyond the defaut.
    * @param timestamp version timestamp
    * @see #setMaxVersions()
-   * @see #setMaxVersions(int) n
+   * @see #setMaxVersions(int)
    */
   public Scan setTimestamp(long timestamp) {
     try {
@@ -417,9 +418,9 @@ public class Scan extends Query {
    * {@link #setStartStopRowForPrefixScan(byte[])}.</strong> Doing so will make the scan result
    * unexpected or even undefined.
    * </p>
-   * @param startRow row to start scanner at or after n * @throws IllegalArgumentException if
+   * @param startRow row to start scanner at or after
-   *                 startRow does not meet criteria for a row key (when length exceeds
+   * @throws IllegalArgumentException if startRow does not meet criteria for a row key (when length
-   *                 {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    * @deprecated since 2.0.0 and will be removed in 3.0.0. Use {@link #withStartRow(byte[])}
    *             instead. This method may change the inclusive of the stop row to keep compatible
    *             with the old behavior.
@@ -441,9 +442,9 @@ public class Scan extends Query {
    * <p>
    * If the specified row does not exist, the Scanner will start from the next closest row after the
    * specified row.
-   * @param startRow row to start scanner at or after n * @throws IllegalArgumentException if
+   * @param startRow row to start scanner at or after
-   *                 startRow does not meet criteria for a row key (when length exceeds
+   * @throws IllegalArgumentException if startRow does not meet criteria for a row key (when length
-   *                 {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    */
   public Scan withStartRow(byte[] startRow) {
     return withStartRow(startRow, true);
@@ -460,9 +461,9 @@ public class Scan extends Query {
    * unexpected or even undefined.
    * </p>
    * @param startRow  row to start scanner at or after
-   * @param inclusive whether we should include the start row when scan n * @throws
+   * @param inclusive whether we should include the start row when scan
-   *                  IllegalArgumentException if startRow does not meet criteria for a row key
+   * @throws IllegalArgumentException if startRow does not meet criteria for a row key (when length
-   *                  (when length exceeds {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    */
   public Scan withStartRow(byte[] startRow, boolean inclusive) {
     if (Bytes.len(startRow) > HConstants.MAX_ROW_LENGTH) {
@@ -483,9 +484,9 @@ public class Scan extends Query {
    * {@link #setStartStopRowForPrefixScan(byte[])}.</strong> Doing so will make the scan result
    * unexpected or even undefined.
    * </p>
-   * @param stopRow row to end at (exclusive) n * @throws IllegalArgumentException if stopRow does
+   * @param stopRow row to end at (exclusive)
-   *                not meet criteria for a row key (when length exceeds
+   * @throws IllegalArgumentException if stopRow does not meet criteria for a row key (when length
-   *                {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    * @deprecated since 2.0.0 and will be removed in 3.0.0. Use {@link #withStopRow(byte[])} instead.
    *             This method may change the inclusive of the stop row to keep compatible with the
    *             old behavior.
@@ -510,9 +511,9 @@ public class Scan extends Query {
    * <b>Note:</b> When doing a filter for a rowKey <u>Prefix</u> use
    * {@link #setRowPrefixFilter(byte[])}. The 'trailing 0' will not yield the desired result.
    * </p>
-   * @param stopRow row to end at (exclusive) n * @throws IllegalArgumentException if stopRow does
+   * @param stopRow row to end at (exclusive)
-   *                not meet criteria for a row key (when length exceeds
+   * @throws IllegalArgumentException if stopRow does not meet criteria for a row key (when length
-   *                {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    */
   public Scan withStopRow(byte[] stopRow) {
     return withStopRow(stopRow, false);
@@ -529,9 +530,9 @@ public class Scan extends Query {
    * unexpected or even undefined.
    * </p>
    * @param stopRow   row to end at
-   * @param inclusive whether we should include the stop row when scan n * @throws
+   * @param inclusive whether we should include the stop row when scan
-   *                  IllegalArgumentException if stopRow does not meet criteria for a row key (when
+   * @throws IllegalArgumentException if stopRow does not meet criteria for a row key (when length
-   *                  length exceeds {@link HConstants#MAX_ROW_LENGTH})
+   *                                  exceeds {@link HConstants#MAX_ROW_LENGTH})
    */
   public Scan withStopRow(byte[] stopRow, boolean inclusive) {
     if (Bytes.len(stopRow) > HConstants.MAX_ROW_LENGTH) {
@@ -559,11 +560,10 @@ public class Scan extends Query {
    * <strong>This CANNOT be used in combination with withStartRow and/or withStopRow.</strong> Such
    * a combination will yield unexpected and even undefined results.
    * </p>
-   * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.) n
+   * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.)
-   *                  * @deprecated since 2.5.0, will be removed in 4.0.0. The name of this method
+   * @deprecated since 2.5.0, will be removed in 4.0.0. The name of this method is considered to be
-   *                  is considered to be confusing as it does not use a {@link Filter} but uses
+   *             confusing as it does not use a {@link Filter} but uses setting the startRow and
-   *                  setting the startRow and stopRow instead. Use
+   *             stopRow instead. Use {@link #setStartStopRowForPrefixScan(byte[])} instead.
-   *                  {@link #setStartStopRowForPrefixScan(byte[])} instead.
    */
   public Scan setRowPrefixFilter(byte[] rowPrefix) {
     return setStartStopRowForPrefixScan(rowPrefix);
@@ -585,7 +585,7 @@ public class Scan extends Query {
    * <strong>This CANNOT be used in combination with withStartRow and/or withStopRow.</strong> Such
    * a combination will yield unexpected and even undefined results.
    * </p>
-   * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.) n
+   * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.)
    */
   public Scan setStartStopRowForPrefixScan(byte[] rowPrefix) {
     if (rowPrefix == null) {
@@ -599,9 +599,9 @@ public class Scan extends Query {
   }
 
   /**
-   * Get all available versions. n * @deprecated since 2.0.0 and will be removed in 3.0.0. It is
+   * Get all available versions.
-   * easy to misunderstand with column family's max versions, so use {@link #readAllVersions()}
+   * @deprecated since 2.0.0 and will be removed in 3.0.0. It is easy to misunderstand with column
-   * instead.
+   *             family's max versions, so use {@link #readAllVersions()} instead.
    * @see #readAllVersions()
    * @see <a href="https://issues.apache.org/jira/browse/HBASE-17125">HBASE-17125</a>
    */
@@ -612,9 +612,9 @@ public class Scan extends Query {
 
   /**
    * Get up to the specified number of versions of each column.
-   * @param maxVersions maximum versions for each column n * @deprecated since 2.0.0 and will be
+   * @param maxVersions maximum versions for each column
-   *                    removed in 3.0.0. It is easy to misunderstand with column family's max
+   * @deprecated since 2.0.0 and will be removed in 3.0.0. It is easy to misunderstand with column
-   *                    versions, so use {@link #readVersions(int)} instead.
+   *             family's max versions, so use {@link #readVersions(int)} instead.
    * @see #readVersions(int)
    * @see <a href="https://issues.apache.org/jira/browse/HBASE-17125">HBASE-17125</a>
    */
@@ -624,7 +624,7 @@ public class Scan extends Query {
   }
 
   /**
-   * Get all available versions. n
+   * Get all available versions.
    */
   public Scan readAllVersions() {
     this.maxVersions = Integer.MAX_VALUE;
@@ -633,7 +633,7 @@ public class Scan extends Query {
 
   /**
    * Get up to the specified number of versions of each column.
-   * @param versions specified number of versions for each column n
+   * @param versions specified number of versions for each column
    */
   public Scan readVersions(int versions) {
     this.maxVersions = versions;
@@ -711,7 +711,7 @@ public class Scan extends Query {
 
   /**
    * Setting the familyMap
-   * @param familyMap map of family to qualifier n
+   * @param familyMap map of family to qualifier
    */
   public Scan setFamilyMap(Map<byte[], NavigableSet<byte[]>> familyMap) {
     this.familyMap = familyMap;
@@ -719,7 +719,7 @@ public class Scan extends Query {
   }
 
   /**
-   * Getting the familyMap n
+   * Getting the familyMap
    */
   public Map<byte[], NavigableSet<byte[]>> getFamilyMap() {
     return this.familyMap;
@@ -794,16 +794,12 @@ public class Scan extends Query {
     return this.caching;
   }
 
-  /**
+  /** Returns TimeRange */
-   * n
-   */
   public TimeRange getTimeRange() {
     return this.tr;
   }
 
-  /**
+  /** Returns RowFilter */
-   * n
-   */
   @Override
   public Filter getFilter() {
     return filter;
@@ -838,7 +834,7 @@ public class Scan extends Query {
    * Set whether this scan is a reversed one
    * <p>
    * This is false by default which means forward(normal) scan.
-   * @param reversed if true, scan will be backward order n
+   * @param reversed if true, scan will be backward order
    */
   public Scan setReversed(boolean reversed) {
     this.reversed = reversed;
@@ -857,7 +853,8 @@ public class Scan extends Query {
    * Setting whether the caller wants to see the partial results when server returns
    * less-than-expected cells. It is helpful while scanning a huge row to prevent OOM at client. By
    * default this value is false and the complete results will be assembled client side before being
-   * delivered to the caller. nn * @see Result#mayHaveMoreCellsInRow()
+   * delivered to the caller.
+   * @see Result#mayHaveMoreCellsInRow()
    * @see #setBatch(int)
    */
   public Scan setAllowPartialResults(final boolean allowPartialResults) {
@@ -881,7 +878,7 @@ public class Scan extends Query {
 
   /**
    * Compile the table and column family (i.e. schema) information into a String. Useful for parsing
-   * and aggregation by debugging, logging, and administration tools. n
+   * and aggregation by debugging, logging, and administration tools.
    */
   @Override
   public Map<String, Object> getFingerprint() {
@@ -903,7 +900,7 @@ public class Scan extends Query {
    * Compile the details beyond the scope of getFingerprint (row, columns, timestamps, etc.) into a
    * Map along with the fingerprinted information. Useful for debugging, logging, and administration
    * tools.
-   * @param maxCols a limit on the number of columns output prior to truncation n
+   * @param maxCols a limit on the number of columns output prior to truncation
    */
   @Override
   public Map<String, Object> toMap(int maxCols) {
@@ -1109,7 +1106,7 @@ public class Scan extends Query {
    * reaches this value.
    * <p>
    * This condition will be tested at last, after all other conditions such as stopRow, filter, etc.
-   * @param limit the limit of rows for this scan n
+   * @param limit the limit of rows for this scan
    */
   public Scan setLimit(int limit) {
     this.limit = limit;
@@ -1118,7 +1115,7 @@ public class Scan extends Query {
 
   /**
    * Call this when you only want to get one row. It will set {@code limit} to {@code 1}, and also
-   * set {@code readType} to {@link ReadType#PREAD}. n
+   * set {@code readType} to {@link ReadType#PREAD}.
    */
   public Scan setOneRowLimit() {
     return setLimit(1).setReadType(ReadType.PREAD);
@@ -1140,7 +1137,7 @@ public class Scan extends Query {
    * Set the read type for this scan.
    * <p>
    * Notice that we may choose to use pread even if you specific {@link ReadType#STREAM} here. For
-   * example, we will always use pread if this is a get scan. n
+   * example, we will always use pread if this is a get scan.
    */
   public Scan setReadType(ReadType readType) {
     this.readType = readType;

hbase-client/src/main/java/org/apache/hadoop/hbase/client/SecureBulkLoadClient.java

@@ -99,8 +99,8 @@ public class SecureBulkLoadClient {
   }
 
   /**
-   * Securely bulk load a list of HFiles using client protocol. nnnnnn * @return true if all are
+   * Securely bulk load a list of HFiles using client protocol.
-   * loaded n
+   * @return true if all are loaded
    */
   public boolean secureBulkLoadHFiles(final ClientService.BlockingInterface client,
     final List<Pair<byte[], String>> familyPaths, final byte[] regionName, boolean assignSeqNum,
@@ -110,8 +110,8 @@ public class SecureBulkLoadClient {
   }
 
   /**
-   * Securely bulk load a list of HFiles using client protocol. nnnnnnn * @return true if all are
+   * Securely bulk load a list of HFiles using client protocol.
-   * loaded n
+   * @return true if all are loaded
    */
   public boolean secureBulkLoadHFiles(final ClientService.BlockingInterface client,
     final List<Pair<byte[], String>> familyPaths, final byte[] regionName, boolean assignSeqNum,

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java

@@ -147,7 +147,8 @@ public interface Table extends Closeable {
    * @param results Empty Object[], same size as actions. Provides access to partial results, in
    *                case an exception is thrown. A null in the result array means that the call for
    *                that action failed, even after retries. The order of the objects in the results
-   *                array corresponds to the order of actions in the request list. n * @since 0.90.0
+   *                array corresponds to the order of actions in the request list.
+   * @since 0.90.0
    */
   default void batch(final List<? extends Row> actions, final Object[] results)
     throws IOException, InterruptedException {
@@ -358,8 +359,8 @@ public interface Table extends Closeable {
    * @apiNote In 3.0.0 version, the input list {@code deletes} will no longer be modified. Also,
    *          {@link #put(List)} runs pre-flight validations on the input list on client. Currently
    *          {@link #delete(List)} doesn't run validations on the client, there is no need
-   *          currently, but this may change in the future. An * {@link IllegalArgumentException}
+   *          currently, but this may change in the future. An {@link IllegalArgumentException} will
-   *          will be thrown in this case.
+   *          be thrown in this case.
    */
   default void delete(List<Delete> deletes) throws IOException {
     throw new NotImplementedException("Add an implementation!");
@@ -780,12 +781,12 @@ public interface Table extends Closeable {
    * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table
    * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), all
    * the invocations to the same region server will be batched into one call. The coprocessor
-   * service is invoked according to the service instance, method name and parameters. n * the
+   * service is invoked according to the service instance, method name and parameters. the
-   * descriptor for the protobuf service method to call. n * the method call parameters n * start
+   * descriptor for the protobuf service method to call. the method call parameters start region
-   * region selection with region containing this row. If {@code null}, the selection will start
+   * selection with region containing this row. If {@code null}, the selection will start with the
-   * with the first table region. n * select regions up to and including the region containing this
+   * first table region. select regions up to and including the region containing this row. If
-   * row. If {@code null}, selection will continue through the last table region. n * the proto type
+   * {@code null}, selection will continue through the last table region. the proto type of the
-   * of the response of the method in Service.
+   * response of the method in Service.
    * @param <R> the response type for the coprocessor Service method
    * @return a map of result values keyed by region name
    */

hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java

@@ -940,7 +940,7 @@ public class TableDescriptorBuilder {
     }
 
     /**
-     * Get the name of the table n
+     * Get the name of the table
      */
     @Override
     public TableName getTableName() {
@@ -1353,7 +1353,8 @@ public class TableDescriptorBuilder {
      * org.apache.hadoop.hbase.coprocessor.RegionObserver or Endpoint. It won't check if the class
      * can be loaded or not. Whether a coprocessor is loadable or not will be determined when a
      * region is opened.
-     * @param className Full class name. n * @return the modifyable TD
+     * @param className Full class name.
+     * @return the modifyable TD
      */
     public ModifyableTableDescriptor setCoprocessor(String className) throws IOException {
       return setCoprocessor(CoprocessorDescriptorBuilder.newBuilder(className)
@@ -1401,8 +1402,8 @@ public class TableDescriptorBuilder {
      * org.apache.hadoop.hbase.coprocessor.RegionObserver or Endpoint. It won't check if the class
      * can be loaded or not. Whether a coprocessor is loadable or not will be determined when a
      * region is opened.
-     * @param specStr The Coprocessor specification all in in one String n * @return the modifyable
+     * @param specStr The Coprocessor specification all in in one String
-     *                TD
+     * @return the modifyable TD
      * @deprecated used by HTableDescriptor and admin.rb. As of release 2.0.0, this will be removed
      *             in HBase 3.0.0.
      */
@@ -1550,8 +1551,8 @@ public class TableDescriptorBuilder {
     /**
      * Parse the serialized representation of a {@link ModifyableTableDescriptor}
      * @param bytes A pb serialized {@link ModifyableTableDescriptor} instance with pb magic prefix
-     * @return An instance of {@link ModifyableTableDescriptor} made from <code>bytes</code> n
+     * @return An instance of {@link ModifyableTableDescriptor} made from <code>bytes</code>
-     *         * @see #toByteArray()
+     * @see #toByteArray()
      */
     private static TableDescriptor parseFrom(final byte[] bytes) throws DeserializationException {
       if (!ProtobufUtil.isPBMagicPrefix(bytes)) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableState.java

@@ -42,7 +42,7 @@ public class TableState {
 
     /**
      * Covert from PB version of State
-     * @param state convert from n
+     * @param state convert from
      */
     public static State convert(HBaseProtos.TableState.State state) {
       State ret;
@@ -66,7 +66,7 @@ public class TableState {
     }
 
     /**
-     * Covert to PB version of State n
+     * Covert to PB version of State
      */
     public HBaseProtos.TableState.State convert() {
       HBaseProtos.TableState.State state;
@@ -140,7 +140,7 @@ public class TableState {
   }
 
   /**
-   * Table name for state n
+   * Table name for state
    */
   public TableName getTableName() {
     return tableName;
@@ -168,7 +168,7 @@ public class TableState {
   }
 
   /**
-   * Covert to PB version of TableState n
+   * Covert to PB version of TableState
    */
   public HBaseProtos.TableState convert() {
     return HBaseProtos.TableState.newBuilder().setState(this.state.convert()).build();
@@ -177,7 +177,7 @@ public class TableState {
   /**
    * Covert from PB version of TableState
    * @param tableName  table this state of
-   * @param tableState convert from n
+   * @param tableState convert from
    */
   public static TableState convert(TableName tableName, HBaseProtos.TableState tableState) {
     TableState.State state = State.convert(tableState.getState());

hbase-client/src/main/java/org/apache/hadoop/hbase/client/UnmodifyableHRegionInfo.java

@@ -27,7 +27,7 @@ import org.apache.yetus.audience.InterfaceAudience;
 @Deprecated
 class UnmodifyableHRegionInfo extends HRegionInfo {
   /*
-   * Creates an unmodifyable copy of an HRegionInfo n
+   * Creates an unmodifyable copy of an HRegionInfo
    */
   UnmodifyableHRegionInfo(HRegionInfo info) {
     super(info);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/backoff/ServerStatistics.java

@@ -33,7 +33,7 @@ public class ServerStatistics {
 
   /**
    * Good enough attempt. Last writer wins. It doesn't really matter which one gets to update, as
-   * something gets set nn
+   * something gets set
    */
   public void update(byte[] region, RegionLoadStats currentStats) {
     RegionStatistics regionStat = this.stats.get(region);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/metrics/ServerSideScanMetrics.java

@@ -35,8 +35,8 @@ public class ServerSideScanMetrics {
   private final Map<String, AtomicLong> counters = new HashMap<>();
 
   /**
-   * Create a new counter with the specified name n * @return {@link AtomicLong} instance for the
+   * Create a new counter with the specified name
-   * counter with counterName
+   * @return {@link AtomicLong} instance for the counter with counterName
    */
   protected AtomicLong createCounter(String counterName) {
     AtomicLong c = new AtomicLong(0);
@@ -75,9 +75,6 @@ public class ServerSideScanMetrics {
    */
   public final AtomicLong countOfRowsScanned = createCounter(COUNT_OF_ROWS_SCANNED_KEY_METRIC_NAME);
 
-  /**
-   * nn
-   */
   public void setCounter(String counterName, long value) {
     AtomicLong c = this.counters.get(counterName);
     if (c != null) {
@@ -85,23 +82,16 @@ public class ServerSideScanMetrics {
     }
   }
 
-  /**
+  /** Returns true if a counter exists with the counterName */
-   * n * @return true if a counter exists with the counterName
-   */
   public boolean hasCounter(String counterName) {
     return this.counters.containsKey(counterName);
   }
 
-  /**
+  /** Returns {@link AtomicLong} instance for this counter name, null if counter does not exist. */
-   * n * @return {@link AtomicLong} instance for this counter name, null if counter does not exist.
-   */
   public AtomicLong getCounter(String counterName) {
     return this.counters.get(counterName);
   }
 
-  /**
-   * nn
-   */
   public void addToCounter(String counterName, long delta) {
     AtomicLong c = this.counters.get(counterName);
     if (c != null) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/replication/ReplicationAdmin.java

@@ -175,7 +175,8 @@ public class ReplicationAdmin implements Closeable {
 
   /**
    * Get the number of slave clusters the local cluster has.
-   * @return number of slave clusters n * @deprecated
+   * @return number of slave clusters
+   * @deprecated
    */
   @Deprecated
   public int getPeersCount() throws IOException {
@@ -219,8 +220,9 @@ public class ReplicationAdmin implements Closeable {
   /**
    * Append the replicable table-cf config of the specified peer
    * @param id       a short that identifies the cluster
-   * @param tableCfs table-cfs config str nn * @deprecated as release of 2.0.0, and it will be
+   * @param tableCfs table-cfs config str
-   *                 removed in 3.0.0, use {@link #appendPeerTableCFs(String, Map)} instead.
+   * @deprecated as release of 2.0.0, and it will be removed in 3.0.0, use
+   *             {@link #appendPeerTableCFs(String, Map)} instead.
    */
   @Deprecated
   public void appendPeerTableCFs(String id, String tableCfs)
@@ -231,7 +233,7 @@ public class ReplicationAdmin implements Closeable {
   /**
    * Append the replicable table-cf config of the specified peer
    * @param id       a short that identifies the cluster
-   * @param tableCfs A map from tableName to column family names nn
+   * @param tableCfs A map from tableName to column family names
    */
   @Deprecated
   public void appendPeerTableCFs(String id, Map<TableName, ? extends Collection<String>> tableCfs)
@@ -242,8 +244,9 @@ public class ReplicationAdmin implements Closeable {
   /**
    * Remove some table-cfs from table-cfs config of the specified peer
    * @param id      a short name that identifies the cluster
-   * @param tableCf table-cfs config str nn * @deprecated as release of 2.0.0, and it will be
+   * @param tableCf table-cfs config str
-   *                removed in 3.0.0, use {@link #removePeerTableCFs(String, Map)} instead.
+   * @deprecated as release of 2.0.0, and it will be removed in 3.0.0, use
+   *             {@link #removePeerTableCFs(String, Map)} instead.
    */
   @Deprecated
   public void removePeerTableCFs(String id, String tableCf)
@@ -254,7 +257,7 @@ public class ReplicationAdmin implements Closeable {
   /**
    * Remove some table-cfs from config of the specified peer
    * @param id       a short name that identifies the cluster
-   * @param tableCfs A map from tableName to column family names nn
+   * @param tableCfs A map from tableName to column family names
    */
   @Deprecated
   public void removePeerTableCFs(String id, Map<TableName, ? extends Collection<String>> tableCfs)

hbase-client/src/main/java/org/apache/hadoop/hbase/coprocessor/ColumnInterpreter.java

@@ -51,36 +51,27 @@ import org.apache.yetus.audience.InterfaceStability;
 public abstract class ColumnInterpreter<T, S, P extends Message, Q extends Message,
   R extends Message> {
 
-  /**
+  /** Returns value of type T */
-   * nnn * @return value of type T n
-   */
   public abstract T getValue(byte[] colFamily, byte[] colQualifier, Cell c) throws IOException;
 
-  /**
+  /** Returns sum or non null value among (if either of them is null); otherwise returns a null. */
-   * nn * @return sum or non null value among (if either of them is null); otherwise returns a null.
-   */
   public abstract S add(S l1, S l2);
 
   /**
-   * returns the maximum value for this type T n
+   * returns the maximum value for this type T
    */
-
   public abstract T getMaxValue();
 
   public abstract T getMinValue();
 
-  /**
+  /** Returns multiplication */
-   * nnn
-   */
   public abstract S multiply(S o1, S o2);
 
-  /**
+  /** Returns increment */
-   * nn
-   */
   public abstract S increment(S o);
 
   /**
-   * provides casting opportunity between the data types. nn
+   * provides casting opportunity between the data types.
    */
   public abstract S castToReturnType(T o);
 
@@ -95,7 +86,7 @@ public abstract class ColumnInterpreter<T, S, P extends Message, Q extends Messa
 
   /**
    * used for computing average of &lt;S&gt; data values. Not providing the divide method that takes
-   * two &lt;S&gt; values as it is not needed as of now. nnn
+   * two &lt;S&gt; values as it is not needed as of now.
    */
   public abstract double divideForAvg(S o, Long l);
 
@@ -111,37 +102,37 @@ public abstract class ColumnInterpreter<T, S, P extends Message, Q extends Messa
 
   /**
    * This method should initialize any field(s) of the ColumnInterpreter with a parsing of the
-   * passed message bytes (used on the server side). n
+   * passed message bytes (used on the server side).
    */
   public abstract void initialize(P msg);
 
   /**
-   * This method gets the PB message corresponding to the cell type n * @return the PB message for
+   * This method gets the PB message corresponding to the cell type
-   * the cell-type instance
+   * @return the PB message for the cell-type instance
    */
   public abstract Q getProtoForCellType(T t);
 
   /**
-   * This method gets the PB message corresponding to the cell type n * @return the cell-type
+   * This method gets the PB message corresponding to the cell type
-   * instance from the PB message
+   * @return the cell-type instance from the PB message
    */
   public abstract T getCellValueFromProto(Q q);
 
   /**
-   * This method gets the PB message corresponding to the promoted type n * @return the PB message
+   * This method gets the PB message corresponding to the promoted type
-   * for the promoted-type instance
+   * @return the PB message for the promoted-type instance
    */
   public abstract R getProtoForPromotedType(S s);
 
   /**
-   * This method gets the promoted type from the proto message n * @return the promoted-type
+   * This method gets the promoted type from the proto message
-   * instance from the PB message
+   * @return the promoted-type instance from the PB message
    */
   public abstract S getPromotedValueFromProto(R r);
 
   /**
    * The response message comes as type S. This will convert/cast it to T. In some sense, performs
-   * the opposite of {@link #castToReturnType(Object)} nn
+   * the opposite of {@link #castToReturnType(Object)}
    */
   public abstract T castToCellType(S response);
 }

hbase-client/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorException.java

@@ -33,7 +33,7 @@ public class CoprocessorException extends DoNotRetryIOException {
   }
 
   /**
-   * Constructor with a Class object and exception message. nn
+   * Constructor with a Class object and exception message.
    */
   public CoprocessorException(Class<?> clazz, String s) {
     super("Coprocessor [" + clazz.getName() + "]: " + s);

hbase-client/src/main/java/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.java

@@ -150,7 +150,7 @@ public final class ClientExceptionsUtil {
   /**
    * Translates exception for preemptive fast fail checks.
    * @param t exception to check
-   * @return translated exception n
+   * @return translated exception
    */
   public static Throwable translatePFFE(Throwable t) throws IOException {
     if (t instanceof NoSuchMethodError) {

hbase-client/src/main/java/org/apache/hadoop/hbase/exceptions/FailedSanityCheckException.java

@@ -35,15 +35,13 @@ public class FailedSanityCheckException extends org.apache.hadoop.hbase.DoNotRet
   }
 
   /**
-   * n
+   *   */
-   */
   public FailedSanityCheckException(String message) {
     super(message);
   }
 
   /**
-   * nn
+   *   */
-   */
   public FailedSanityCheckException(String message, Throwable cause) {
     super(message, cause);
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/ColumnValueFilter.java

@@ -68,9 +68,7 @@ public class ColumnValueFilter extends FilterBase {
     this.comparator = Preconditions.checkNotNull(comparator, "Comparator should not be null");
   }
 
-  /**
+  /** Returns operator */
-   * n
-   */
   public CompareOperator getCompareOperator() {
     return op;
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/CompareFilter.java

@@ -101,8 +101,7 @@ public abstract class CompareFilter extends FilterBase {
   }
 
   /**
-   * n * @deprecated since 2.0.0. Will be removed in 3.0.0. Use {@link #getCompareOperator()}
+   * @deprecated since 2.0.0. Will be removed in 3.0.0. Use {@link #getCompareOperator()} instead.
-   * instead.
    */
   @Deprecated
   public CompareOp getOperator() {

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/Filter.java

@@ -252,8 +252,9 @@ public abstract class Filter {
 
   /**
    * Concrete implementers can signal a failure condition in their code by throwing an
-   * {@link IOException}. n * @return true if and only if the fields of the filter that are
+   * {@link IOException}.
-   * serialized are equal to the corresponding fields in other. Used for testing.
+   * @return true if and only if the fields of the filter that are serialized are equal to the
+   *         corresponding fields in other. Used for testing.
    */
   abstract boolean areSerializedFieldsEqual(Filter other);
 

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterBase.java

@@ -148,9 +148,9 @@ public abstract class FilterBase extends Filter {
   }
 
   /**
-   * Default implementation so that writers of custom filters aren't forced to implement. n
+   * Default implementation so that writers of custom filters aren't forced to implement.
-   * * @return true if and only if the fields of the filter that are serialized are equal to the
+   * @return true if and only if the fields of the filter that are serialized are equal to the
-   * corresponding fields in other. Used for testing.
+   *         corresponding fields in other. Used for testing.
    */
   @Override
   boolean areSerializedFieldsEqual(Filter other) {

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java

@@ -84,7 +84,7 @@ final public class FilterList extends FilterBase {
 
   /**
    * Constructor that takes a var arg number of {@link Filter}s. The default operator MUST_PASS_ALL
-   * is assumed. n
+   * is assumed.
    */
   public FilterList(final Filter... filters) {
     this(Operator.MUST_PASS_ALL, Arrays.asList(filters));
@@ -108,14 +108,14 @@ final public class FilterList extends FilterBase {
   }
 
   /**
-   * Get the operator. n
+   * Get the operator.
    */
   public Operator getOperator() {
     return operator;
   }
 
   /**
-   * Get the filters. n
+   * Get the filters.
    */
   public List<Filter> getFilters() {
     return filterListBase.getFilters();

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterListBase.java

@@ -92,7 +92,7 @@ public abstract class FilterListBase extends FilterBase {
    * the current child, we should set the traverse result (transformed cell) of previous node(s) as
    * the initial value. (HBASE-18879).
    * @param c The cell in question.
-   * @return the transformed cell. n
+   * @return the transformed cell.
    */
   @Override
   public Cell transformCell(Cell c) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FuzzyRowFilter.java

@@ -138,7 +138,8 @@ public class FuzzyRowFilter extends FilterBase {
 
   /**
    * We need to preprocess mask array, as since we treat 2's as unfixed positions and -1 (0xff) as
-   * fixed positions n * @return mask array
+   * fixed positions
+   * @return mask array
    */
   private byte[] preprocessMask(byte[] mask) {
     if (!UNSAFE_UNALIGNED) {
@@ -630,8 +631,8 @@ public class FuzzyRowFilter extends FilterBase {
 
   /**
    * For forward scanner, next cell hint should not contain any trailing zeroes unless they are part
-   * of fuzzyKeyMeta hint = '\x01\x01\x01\x00\x00' will skip valid row '\x01\x01\x01' nn * @param
+   * of fuzzyKeyMeta hint = '\x01\x01\x01\x00\x00' will skip valid row '\x01\x01\x01'
-   * toInc - position of incremented byte
+   * @param toInc - position of incremented byte
    * @return trimmed version of result
    */
 

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RandomRowFilter.java

@@ -38,7 +38,7 @@ public class RandomRowFilter extends FilterBase {
   protected boolean filterOutRow;
 
   /**
-   * Create a new filter with a specified chance for a row to be included. n
+   * Create a new filter with a specified chance for a row to be included.
    */
   public RandomRowFilter(float chance) {
     this.chance = chance;
@@ -50,7 +50,7 @@ public class RandomRowFilter extends FilterBase {
   }
 
   /**
-   * Set the chance that a row is included. n
+   * Set the chance that a row is included.
    */
   public void setChance(float chance) {
     this.chance = chance;

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueExcludeFilter.java

@@ -109,9 +109,9 @@ public class SingleColumnValueExcludeFilter extends SingleColumnValueFilter {
   }
 
   /**
-   * Constructor for protobuf deserialization only. nnnnnn * @deprecated Since 2.0.0. Will be
+   * Constructor for protobuf deserialization only.
-   * removed in 3.0.0. Use
+   * @deprecated Since 2.0.0. Will be removed in 3.0.0. Use
-   * {@link #SingleColumnValueExcludeFilter(byte[], byte[], CompareOperator, ByteArrayComparable, boolean, boolean)}
+   *             {@link #SingleColumnValueExcludeFilter(byte[], byte[], CompareOperator, ByteArrayComparable, boolean, boolean)}
    */
   @Deprecated
   protected SingleColumnValueExcludeFilter(final byte[] family, final byte[] qualifier,
@@ -122,7 +122,7 @@ public class SingleColumnValueExcludeFilter extends SingleColumnValueFilter {
   }
 
   /**
-   * Constructor for protobuf deserialization only. nnnnnn
+   * Constructor for protobuf deserialization only.
    */
   protected SingleColumnValueExcludeFilter(final byte[] family, final byte[] qualifier,
     final CompareOperator op, ByteArrayComparable comparator, final boolean filterIfMissing,

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueFilter.java

@@ -155,10 +155,10 @@ public class SingleColumnValueFilter extends FilterBase {
   }
 
   /**
-   * Constructor for protobuf deserialization only. nnnnnn * @deprecated Since 2.0.0. Will be
+   * Constructor for protobuf deserialization only.
-   * removed in 3.0.0. Use
+   * @deprecated Since 2.0.0. Will be removed in 3.0.0. Use
-   * {@link #SingleColumnValueFilter(byte[], byte[], CompareOperator, ByteArrayComparable, boolean, boolean)}
+   *             {@link #SingleColumnValueFilter(byte[], byte[], CompareOperator, ByteArrayComparable, boolean, boolean)}
-   * instead.
+   *             instead.
    */
   @Deprecated
   protected SingleColumnValueFilter(final byte[] family, final byte[] qualifier,
@@ -169,7 +169,7 @@ public class SingleColumnValueFilter extends FilterBase {
   }
 
   /**
-   * Constructor for protobuf deserialization only. nnnnnn
+   * Constructor for protobuf deserialization only.
    */
   protected SingleColumnValueFilter(final byte[] family, final byte[] qualifier,
     final CompareOperator op, org.apache.hadoop.hbase.filter.ByteArrayComparable comparator,
@@ -180,8 +180,7 @@ public class SingleColumnValueFilter extends FilterBase {
   }
 
   /**
-   * n * @deprecated since 2.0.0. Will be removed in 3.0.0. Use {@link #getCompareOperator()}
+   * @deprecated since 2.0.0. Will be removed in 3.0.0. Use {@link #getCompareOperator()} instead.
-   * instead.
    */
   @Deprecated
   public CompareOp getOperator() {

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/TimestampsFilter.java

@@ -54,7 +54,7 @@ public class TimestampsFilter extends FilterBase {
   long minTimestamp = Long.MAX_VALUE;
 
   /**
-   * Constructor for filter that retains only the specified timestamps in the list. n
+   * Constructor for filter that retains only the specified timestamps in the list.
    */
   public TimestampsFilter(List<Long> timestamps) {
     this(timestamps, false);

hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/CellBlockBuilder.java

@@ -104,9 +104,10 @@ class CellBlockBuilder {
 
   /**
    * Puts CellScanner Cells into a cell block using passed in <code>codec</code> and/or
-   * <code>compressor</code>. nnn * @return Null or byte buffer filled with a cellblock filled with
+   * <code>compressor</code>.
-   * passed-in Cells encoded using passed in <code>codec</code> and/or <code>compressor</code>; the
+   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using
-   * returned buffer has been flipped and is ready for reading. Use limit to find total size. n
+   *         passed in <code>codec</code> and/or <code>compressor</code>; the returned buffer has
+   *         been flipped and is ready for reading. Use limit to find total size.
    */
   public ByteBuffer buildCellBlock(final Codec codec, final CompressionCodec compressor,
     final CellScanner cellScanner) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java

@@ -259,7 +259,7 @@ public final class ProtobufUtil {
    * Like {@link #getRemoteException(ServiceException)} but more generic, able to handle more than
    * just {@link ServiceException}. Prefer this method to
    * {@link #getRemoteException(ServiceException)} because trying to contain direct protobuf
-   * references. n
+   * references.
    */
   public static IOException handleRemoteException(Exception e) {
     return makeIOExceptionOfException(e);
@@ -363,7 +363,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Get to a client Get
    * @param proto the protocol buffer Get to convert
-   * @return the converted client Get n
+   * @return the converted client Get
    */
   public static Get toGet(final ClientProtos.Get proto) throws IOException {
     if (proto == null) return null;
@@ -448,7 +448,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Mutate to a Put.
    * @param proto The protocol buffer MutationProto to convert
-   * @return A client Put. n
+   * @return A client Put.
    */
   public static Put toPut(final MutationProto proto) throws IOException {
     return toPut(proto, null);
@@ -458,7 +458,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Mutate to a Put.
    * @param proto       The protocol buffer MutationProto to convert
    * @param cellScanner If non-null, the Cell data that goes with this proto.
-   * @return A client Put. n
+   * @return A client Put.
    */
   public static Put toPut(final MutationProto proto, final CellScanner cellScanner)
     throws IOException {
@@ -542,7 +542,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Mutate to a Delete
    * @param proto the protocol buffer Mutate to convert
-   * @return the converted client Delete n
+   * @return the converted client Delete
    */
   public static Delete toDelete(final MutationProto proto) throws IOException {
     return toDelete(proto, null);
@@ -552,7 +552,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Mutate to a Delete
    * @param proto       the protocol buffer Mutate to convert
    * @param cellScanner if non-null, the data that goes with this delete.
-   * @return the converted client Delete n
+   * @return the converted client Delete
    */
   public static Delete toDelete(final MutationProto proto, final CellScanner cellScanner)
     throws IOException {
@@ -716,7 +716,7 @@ public final class ProtobufUtil {
   /**
    * Convert a MutateRequest to Mutation
    * @param proto the protocol buffer Mutate to convert
-   * @return the converted Mutation n
+   * @return the converted Mutation
    */
   public static Mutation toMutation(final MutationProto proto) throws IOException {
     MutationType type = proto.getMutateType();
@@ -737,7 +737,8 @@ public final class ProtobufUtil {
 
   /**
    * Convert a protocol buffer Mutate to a Get.
-   * @param proto the protocol buffer Mutate to convert. n * @return the converted client get. n
+   * @param proto the protocol buffer Mutate to convert.
+   * @return the converted client get.
    */
   public static Get toGet(final MutationProto proto, final CellScanner cellScanner)
     throws IOException {
@@ -817,7 +818,7 @@ public final class ProtobufUtil {
   /**
    * Convert a client Scan to a protocol buffer Scan
    * @param scan the client Scan to convert
-   * @return the converted protocol buffer Scan n
+   * @return the converted protocol buffer Scan
    */
   public static ClientProtos.Scan toScan(final Scan scan) throws IOException {
     ClientProtos.Scan.Builder scanBuilder = ClientProtos.Scan.newBuilder();
@@ -910,7 +911,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Scan to a client Scan
    * @param proto the protocol buffer Scan to convert
-   * @return the converted client Scan n
+   * @return the converted client Scan
    */
   public static Scan toScan(final ClientProtos.Scan proto) throws IOException {
     byte[] startRow = HConstants.EMPTY_START_ROW;
@@ -1011,7 +1012,7 @@ public final class ProtobufUtil {
   /**
    * Create a protocol buffer Get based on a client Get.
    * @param get the client Get
-   * @return a protocol buffer Get n
+   * @return a protocol buffer Get
    */
   public static ClientProtos.Get toGet(final Get get) throws IOException {
     ClientProtos.Get.Builder builder = ClientProtos.Get.newBuilder();
@@ -1076,7 +1077,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Create a protocol buffer Mutate based on a client Mutation nn * @return a protobuf'd Mutation n
+   * Create a protocol buffer Mutate based on a client Mutation
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutation(final MutationType type, final Mutation mutation,
     final long nonce) throws IOException {
@@ -1125,8 +1127,8 @@ public final class ProtobufUtil {
 
   /**
    * Create a protocol buffer MutationProto based on a client Mutation. Does NOT include data.
-   * Understanding is that the Cell will be transported other than via protobuf. nnn * @return a
+   * Understanding is that the Cell will be transported other than via protobuf.
-   * protobuf'd Mutation n
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutationNoData(final MutationType type, final Mutation mutation,
     final MutationProto.Builder builder) throws IOException {
@@ -1135,8 +1137,8 @@ public final class ProtobufUtil {
 
   /**
    * Create a protocol buffer MutationProto based on a client Mutation. Does NOT include data.
-   * Understanding is that the Cell will be transported other than via protobuf. nn * @return a
+   * Understanding is that the Cell will be transported other than via protobuf.
-   * protobuf'd Mutation n
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutationNoData(final MutationType type, final Mutation mutation)
     throws IOException {
@@ -1162,8 +1164,8 @@ public final class ProtobufUtil {
 
   /**
    * Code shared by {@link #toMutation(MutationType, Mutation)} and
-   * {@link #toMutationNoData(MutationType, Mutation)} nn * @return A partly-filled out protobuf'd
+   * {@link #toMutationNoData(MutationType, Mutation)}
-   * Mutation.
+   * @return A partly-filled out protobuf'd Mutation.
    */
   private static MutationProto.Builder getMutationBuilderAndSetCommonFields(final MutationType type,
     final Mutation mutation, MutationProto.Builder builder) {
@@ -1268,7 +1270,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Result to a client Result
    * @param proto   the protocol buffer Result to convert
    * @param scanner Optional cell scanner.
-   * @return the converted client Result n
+   * @return the converted client Result
    */
   public static Result toResult(final ClientProtos.Result proto, final CellScanner scanner)
     throws IOException {
@@ -1382,8 +1384,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a delete KeyValue type to protocol buffer DeleteType. n * @return protocol buffer
+   * Convert a delete KeyValue type to protocol buffer DeleteType.
-   * DeleteType n
+   * @return protocol buffer DeleteType
    */
   public static DeleteType toDeleteType(KeyValue.Type type) throws IOException {
     switch (type) {
@@ -1403,7 +1405,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer DeleteType to delete KeyValue type.
    * @param type The DeleteType
-   * @return The type. n
+   * @return The type.
    */
   public static KeyValue.Type fromDeleteType(DeleteType type) throws IOException {
     switch (type) {
@@ -1567,7 +1569,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers when
    * working with byte arrays
    * @param builder current message builder
-   * @param b       byte array n
+   * @param b       byte array
    */
   public static void mergeFrom(Message.Builder builder, byte[] b) throws IOException {
     final CodedInputStream codedInput = CodedInputStream.newInstance(b);
@@ -1580,7 +1582,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers when
    * working with byte arrays
    * @param builder current message builder
-   * @param b       byte array nnn
+   * @param b       byte array
    */
   public static void mergeFrom(Message.Builder builder, byte[] b, int offset, int length)
     throws IOException {
@@ -1634,7 +1636,7 @@ public final class ProtobufUtil {
    *             magic and that is then followed by a protobuf that has a serialized
    *             {@link ServerName} in it.
    * @return Returns null if <code>data</code> is null else converts passed data to a ServerName
-   *         instance. n
+   *         instance.
    */
   public static ServerName toServerName(final byte[] data) throws DeserializationException {
     if (data == null || data.length <= 0) return null;

hbase-client/src/main/java/org/apache/hadoop/hbase/regionserver/LeaseException.java

@@ -34,8 +34,7 @@ public class LeaseException extends DoNotRetryIOException {
   }
 
   /**
-   * n
+   *   */
-   */
   public LeaseException(String message) {
     super(message);
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/regionserver/wal/FailedLogCloseException.java

@@ -33,8 +33,7 @@ public class FailedLogCloseException extends IOException {
   }
 
   /**
-   * n
+   *   */
-   */
   public FailedLogCloseException(String msg) {
     super(msg);
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.java

@@ -32,8 +32,7 @@ public class FailedSyncBeforeLogCloseException extends FailedLogCloseException {
   }
 
   /**
-   * n
+   *   */
-   */
   public FailedSyncBeforeLogCloseException(String msg) {
     super(msg);
   }

hbase-client/src/main/java/org/apache/hadoop/hbase/security/AbstractHBaseSaslRpcClient.java

@@ -50,7 +50,7 @@ public abstract class AbstractHBaseSaslRpcClient {
    * @param token           token to use if needed by the authentication method
    * @param serverAddr      the address of the hbase service
    * @param securityInfo    the security details for the remote hbase service
-   * @param fallbackAllowed does the client allow fallback to simple authentication n
+   * @param fallbackAllowed does the client allow fallback to simple authentication
    */
   protected AbstractHBaseSaslRpcClient(Configuration conf,
     SaslClientAuthenticationProvider provider, Token<? extends TokenIdentifier> token,
@@ -66,7 +66,7 @@ public abstract class AbstractHBaseSaslRpcClient {
    * @param serverAddr      the address of the hbase service
    * @param securityInfo    the security details for the remote hbase service
    * @param fallbackAllowed does the client allow fallback to simple authentication
-   * @param rpcProtection   the protection level ("authentication", "integrity" or "privacy") n
+   * @param rpcProtection   the protection level ("authentication", "integrity" or "privacy")
    */
   protected AbstractHBaseSaslRpcClient(Configuration conf,
     SaslClientAuthenticationProvider provider, Token<? extends TokenIdentifier> token,

hbase-client/src/main/java/org/apache/hadoop/hbase/security/EncryptionUtil.java

@@ -62,7 +62,7 @@ public final class EncryptionUtil {
    * @param conf      configuration
    * @param key       the raw key bytes
    * @param algorithm the algorithm to use with this key material
-   * @return the encrypted key bytes n
+   * @return the encrypted key bytes
    */
   public static byte[] wrapKey(Configuration conf, byte[] key, String algorithm)
     throws IOException {
@@ -115,7 +115,7 @@ public final class EncryptionUtil {
    * @param conf    configuration
    * @param subject subject key alias
    * @param value   the encrypted key bytes
-   * @return the raw key bytes nn
+   * @return the raw key bytes
    */
   public static Key unwrapKey(Configuration conf, String subject, byte[] value)
     throws IOException, KeyException {

hbase-client/src/main/java/org/apache/hadoop/hbase/security/HBaseSaslRpcClient.java

@@ -86,7 +86,7 @@ public class HBaseSaslRpcClient extends AbstractHBaseSaslRpcClient {
    * Do client side SASL authentication with server via the given InputStream and OutputStream
    * @param inS  InputStream to use
    * @param outS OutputStream to use
-   * @return true if connection is set up, or false if needs to switch to simple Auth. n
+   * @return true if connection is set up, or false if needs to switch to simple Auth.
    */
   public boolean saslConnect(InputStream inS, OutputStream outS) throws IOException {
     DataInputStream inStream = new DataInputStream(new BufferedInputStream(inS));
@@ -185,7 +185,7 @@ public class HBaseSaslRpcClient extends AbstractHBaseSaslRpcClient {
 
   /**
    * Get a SASL wrapped InputStream. Can be called only after saslConnect() has been called.
-   * @return a SASL wrapped InputStream n
+   * @return a SASL wrapped InputStream
    */
   public InputStream getInputStream() throws IOException {
     if (!saslClient.isComplete()) {
@@ -248,7 +248,7 @@ public class HBaseSaslRpcClient extends AbstractHBaseSaslRpcClient {
 
   /**
    * Get a SASL wrapped OutputStream. Can be called only after saslConnect() has been called.
-   * @return a SASL wrapped OutputStream n
+   * @return a SASL wrapped OutputStream
    */
   public OutputStream getOutputStream() throws IOException {
     if (!saslClient.isComplete()) {

hbase-client/src/main/java/org/apache/hadoop/hbase/security/access/AccessControlClient.java

@@ -45,7 +45,7 @@ public class AccessControlClient {
   /**
    * Return true if authorization is supported and enabled
    * @param connection The connection to use
-   * @return true if authorization is supported and enabled, false otherwise n
+   * @return true if authorization is supported and enabled, false otherwise
    */
   public static boolean isAuthorizationEnabled(Connection connection) throws IOException {
     return connection.getAdmin().getSecurityCapabilities()
@@ -55,7 +55,7 @@ public class AccessControlClient {
   /**
    * Return true if cell authorization is supported and enabled
    * @param connection The connection to use
-   * @return true if cell authorization is supported and enabled, false otherwise n
+   * @return true if cell authorization is supported and enabled, false otherwise
    */
   public static boolean isCellAuthorizationEnabled(Connection connection) throws IOException {
     return connection.getAdmin().getSecurityCapabilities()
@@ -146,7 +146,7 @@ public class AccessControlClient {
 
   /**
    * Grant global permissions for the specified user. If permissions for the specified user exists,
-   * later granted permissions will override previous granted permissions. nnnn
+   * later granted permissions will override previous granted permissions.
    */
   public static void grant(Connection connection, final String userName,
     final Permission.Action... actions) throws Throwable {
@@ -162,7 +162,7 @@ public class AccessControlClient {
 
   /**
    * Revokes the permission on the table
-   * @param connection The Connection instance to use nnnnnn
+   * @param connection The Connection instance to use
    */
   public static void revoke(Connection connection, final TableName tableName, final String username,
     final byte[] family, final byte[] qualifier, final Permission.Action... actions)
@@ -173,7 +173,7 @@ public class AccessControlClient {
 
   /**
    * Revokes the permission on the namespace for the specified user.
-   * @param connection The Connection instance to use nnnn
+   * @param connection The Connection instance to use
    */
   public static void revoke(Connection connection, final String namespace, final String userName,
     final Permission.Action... actions) throws Throwable {
@@ -197,7 +197,7 @@ public class AccessControlClient {
    * along with the list of superusers would be returned. Else, no rows get returned.
    * @param connection The Connection instance to use
    * @param tableRegex The regular expression string to match against
-   * @return List of UserPermissions n
+   * @return List of UserPermissions
    */
   public static List<UserPermission> getUserPermissions(Connection connection, String tableRegex)
     throws Throwable {

hbase-client/src/main/java/org/apache/hadoop/hbase/security/access/AccessControlUtil.java

@@ -447,8 +447,8 @@ public class AccessControlUtil {
    * It's also called by the shell, in case you want to find references.
    * @param protocol      the AccessControlService protocol proxy
    * @param userShortName the short name of the user to grant permissions
-   * @param actions       the permissions to be granted n * @deprecated Use
+   * @param actions       the permissions to be granted
-   *                      {@link Admin#grant(UserPermission, boolean)} instead.
+   * @deprecated Use {@link Admin#grant(UserPermission, boolean)} instead.
    */
   @Deprecated
   public static void grant(RpcController controller,
@@ -475,8 +475,8 @@ public class AccessControlUtil {
    * @param tableName     optional table name
    * @param f             optional column family
    * @param q             optional qualifier
-   * @param actions       the permissions to be granted n * @deprecated Use
+   * @param actions       the permissions to be granted
-   *                      {@link Admin#grant(UserPermission, boolean)} instead.
+   * @deprecated Use {@link Admin#grant(UserPermission, boolean)} instead.
    */
   @Deprecated
   public static void grant(RpcController controller,
@@ -501,8 +501,8 @@ public class AccessControlUtil {
    * @param controller RpcController
    * @param protocol   the AccessControlService protocol proxy
    * @param namespace  the short name of the user to grant permissions
-   * @param actions    the permissions to be granted n * @deprecated Use
+   * @param actions    the permissions to be granted
-   *                   {@link Admin#grant(UserPermission, boolean)} instead.
+   * @deprecated Use {@link Admin#grant(UserPermission, boolean)} instead.
    */
   @Deprecated
   public static void grant(RpcController controller,
@@ -618,9 +618,8 @@ public class AccessControlUtil {
    * A utility used to get user's global permissions based on the specified user name.
    * @param controller RpcController
    * @param protocol   the AccessControlService protocol proxy
-   * @param userName   User name, if empty then all user permissions will be retrieved. n
+   * @param userName   User name, if empty then all user permissions will be retrieved.
-   *                   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)}
+   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
-   *                   instead.
    */
   @Deprecated
   public static List<UserPermission> getUserPermissions(RpcController controller,
@@ -648,8 +647,8 @@ public class AccessControlUtil {
    * It's also called by the shell, in case you want to find references.
    * @param controller RpcController
    * @param protocol   the AccessControlService protocol proxy
-   * @param t          optional table name n * @deprecated Use
+   * @param t          optional table name
-   *                   {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
+   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
    */
   @Deprecated
   public static List<UserPermission> getUserPermissions(RpcController controller,
@@ -665,9 +664,8 @@ public class AccessControlUtil {
    * @param t               optional table name
    * @param columnFamily    Column family
    * @param columnQualifier Column qualifier
-   * @param userName        User name, if empty then all user permissions will be retrieved. n
+   * @param userName        User name, if empty then all user permissions will be retrieved.
-   *                        * @deprecated Use
+   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
-   *                        {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
    */
   @Deprecated
   public static List<UserPermission> getUserPermissions(RpcController controller,
@@ -705,8 +703,8 @@ public class AccessControlUtil {
    * It's also called by the shell, in case you want to find references.
    * @param controller RpcController
    * @param protocol   the AccessControlService protocol proxy
-   * @param namespace  name of the namespace n * @deprecated Use
+   * @param namespace  name of the namespace
-   *                   {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
+   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
    */
   @Deprecated
   public static List<UserPermission> getUserPermissions(RpcController controller,
@@ -719,9 +717,8 @@ public class AccessControlUtil {
    * @param controller RpcController
    * @param protocol   the AccessControlService protocol proxy
    * @param namespace  name of the namespace
-   * @param userName   User name, if empty then all user permissions will be retrieved. n
+   * @param userName   User name, if empty then all user permissions will be retrieved.
-   *                   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)}
+   * @deprecated Use {@link Admin#getUserPermissions(GetUserPermissionsRequest)} instead.
-   *                   instead.
    */
   @Deprecated
   public static List<UserPermission> getUserPermissions(RpcController controller,
@@ -759,8 +756,8 @@ public class AccessControlUtil {
    *                        will not be considered if columnFamily is passed as null or empty.
    * @param userName        User name, it shouldn't be null or empty.
    * @param actions         Actions
-   * @return true if access allowed, otherwise false n * @deprecated Use
+   * @return true if access allowed, otherwise false
-   *         {@link Admin#hasUserPermissions(String, List)} instead.
+   * @deprecated Use {@link Admin#hasUserPermissions(String, List)} instead.
    */
   @Deprecated
   public static boolean hasPermission(RpcController controller,

hbase-client/src/main/java/org/apache/hadoop/hbase/security/visibility/VisibilityClient.java

@@ -55,7 +55,7 @@ public class VisibilityClient {
   /**
    * Return true if cell visibility features are supported and enabled
    * @param connection The connection to use
-   * @return true if cell visibility features are supported and enabled, false otherwise n
+   * @return true if cell visibility features are supported and enabled, false otherwise
    */
   public static boolean isCellVisibilityEnabled(Connection connection) throws IOException {
     return connection.getAdmin().getSecurityCapabilities()
@@ -63,8 +63,8 @@ public class VisibilityClient {
   }
 
   /**
-   * Utility method for adding label to the system. nnnn * @deprecated Use
+   * Utility method for adding label to the system.
-   * {@link #addLabel(Connection,String)} instead.
+   * @deprecated Use {@link #addLabel(Connection,String)} instead.
    */
   @Deprecated
   public static VisibilityLabelsResponse addLabel(Configuration conf, final String label)
@@ -75,7 +75,7 @@ public class VisibilityClient {
   }
 
   /**
-   * Utility method for adding label to the system. nnnn
+   * Utility method for adding label to the system.
    */
   public static VisibilityLabelsResponse addLabel(Connection connection, final String label)
     throws Throwable {
@@ -83,8 +83,8 @@ public class VisibilityClient {
   }
 
   /**
-   * Utility method for adding labels to the system. nnnn * @deprecated Use
+   * Utility method for adding labels to the system.
-   * {@link #addLabels(Connection,String[])} instead.
+   * @deprecated Use {@link #addLabels(Connection,String[])} instead.
    */
   @Deprecated
   public static VisibilityLabelsResponse addLabels(Configuration conf, final String[] labels)
@@ -95,7 +95,7 @@ public class VisibilityClient {
   }
 
   /**
-   * Utility method for adding labels to the system. nnnn
+   * Utility method for adding labels to the system.
    */
   public static VisibilityLabelsResponse addLabels(Connection connection, final String[] labels)
     throws Throwable {
@@ -133,8 +133,8 @@ public class VisibilityClient {
   }
 
   /**
-   * Sets given labels globally authorized for the user. nnnnn * @deprecated Use
+   * Sets given labels globally authorized for the user.
-   * {@link #setAuths(Connection,String[],String)} instead.
+   * @deprecated Use {@link #setAuths(Connection,String[],String)} instead.
    */
   @Deprecated
   public static VisibilityLabelsResponse setAuths(Configuration conf, final String[] auths,
@@ -145,7 +145,7 @@ public class VisibilityClient {
   }
 
   /**
-   * Sets given labels globally authorized for the user. nnnnn
+   * Sets given labels globally authorized for the user.
    */
   public static VisibilityLabelsResponse setAuths(Connection connection, final String[] auths,
     final String user) throws Throwable {
@@ -153,8 +153,8 @@ public class VisibilityClient {
   }
 
   /**
-   * Returns labels, the given user is globally authorized for. n * @deprecated Use
+   * Returns labels, the given user is globally authorized for.
-   * {@link #getAuths(Connection,String)} instead.
+   * @deprecated Use {@link #getAuths(Connection,String)} instead.
    */
   @Deprecated
   public static GetAuthsResponse getAuths(Configuration conf, final String user) throws Throwable {
@@ -216,7 +216,7 @@ public class VisibilityClient {
    * Retrieve the list of visibility labels defined in the system.
    * @param connection The Connection instance to use.
    * @param regex      The regular expression to filter which labels are returned.
-   * @return labels The list of visibility labels defined in the system. n
+   * @return labels The list of visibility labels defined in the system.
    */
   public static ListLabelsResponse listLabels(Connection connection, final String regex)
     throws Throwable {
@@ -252,8 +252,8 @@ public class VisibilityClient {
   }
 
   /**
-   * Removes given labels from user's globally authorized list of labels. nnnnn * @deprecated Use
+   * Removes given labels from user's globally authorized list of labels.
-   * {@link #clearAuths(Connection,String[],String)} instead.
+   * @deprecated Use {@link #clearAuths(Connection,String[],String)} instead.
    */
   @Deprecated
   public static VisibilityLabelsResponse clearAuths(Configuration conf, final String[] auths,
@@ -264,7 +264,7 @@ public class VisibilityClient {
   }
 
   /**
-   * Removes given labels from user's globally authorized list of labels. nnnnn
+   * Removes given labels from user's globally authorized list of labels.
    */
   public static VisibilityLabelsResponse clearAuths(Connection connection, final String[] auths,
     final String user) throws Throwable {

hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java

@@ -352,7 +352,7 @@ public final class ProtobufUtil {
    * Like {@link #getRemoteException(ServiceException)} but more generic, able to handle more than
    * just {@link ServiceException}. Prefer this method to
    * {@link #getRemoteException(ServiceException)} because trying to contain direct protobuf
-   * references. n
+   * references.
    */
   public static IOException handleRemoteException(Exception e) {
     return makeIOExceptionOfException(e);
@@ -513,7 +513,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Get to a client Get
    * @param proto the protocol buffer Get to convert
-   * @return the converted client Get n
+   * @return the converted client Get
    */
   public static Get toGet(final ClientProtos.Get proto) throws IOException {
     if (proto == null) return null;
@@ -598,7 +598,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Mutate to a Put.
    * @param proto The protocol buffer MutationProto to convert
-   * @return A client Put. n
+   * @return A client Put.
    */
   public static Put toPut(final MutationProto proto) throws IOException {
     return toPut(proto, null);
@@ -608,7 +608,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Mutate to a Put.
    * @param proto       The protocol buffer MutationProto to convert
    * @param cellScanner If non-null, the Cell data that goes with this proto.
-   * @return A client Put. n
+   * @return A client Put.
    */
   public static Put toPut(final MutationProto proto, final CellScanner cellScanner)
     throws IOException {
@@ -692,7 +692,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Mutate to a Delete
    * @param proto the protocol buffer Mutate to convert
-   * @return the converted client Delete n
+   * @return the converted client Delete
    */
   public static Delete toDelete(final MutationProto proto) throws IOException {
     return toDelete(proto, null);
@@ -702,7 +702,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Mutate to a Delete
    * @param proto       the protocol buffer Mutate to convert
    * @param cellScanner if non-null, the data that goes with this delete.
-   * @return the converted client Delete n
+   * @return the converted client Delete
    */
   public static Delete toDelete(final MutationProto proto, final CellScanner cellScanner)
     throws IOException {
@@ -871,7 +871,7 @@ public final class ProtobufUtil {
   /**
    * Convert a MutateRequest to Mutation
    * @param proto the protocol buffer Mutate to convert
-   * @return the converted Mutation n
+   * @return the converted Mutation
    */
   public static Mutation toMutation(final MutationProto proto) throws IOException {
     MutationType type = proto.getMutateType();
@@ -919,7 +919,7 @@ public final class ProtobufUtil {
   /**
    * Convert a client Scan to a protocol buffer Scan
    * @param scan the client Scan to convert
-   * @return the converted protocol buffer Scan n
+   * @return the converted protocol buffer Scan
    */
   public static ClientProtos.Scan toScan(final Scan scan) throws IOException {
     ClientProtos.Scan.Builder scanBuilder = ClientProtos.Scan.newBuilder();
@@ -1016,7 +1016,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer Scan to a client Scan
    * @param proto the protocol buffer Scan to convert
-   * @return the converted client Scan n
+   * @return the converted client Scan
    */
   public static Scan toScan(final ClientProtos.Scan proto) throws IOException {
     byte[] startRow = HConstants.EMPTY_START_ROW;
@@ -1141,7 +1141,7 @@ public final class ProtobufUtil {
   /**
    * Create a protocol buffer Get based on a client Get.
    * @param get the client Get
-   * @return a protocol buffer Get n
+   * @return a protocol buffer Get
    */
   public static ClientProtos.Get toGet(final Get get) throws IOException {
     ClientProtos.Get.Builder builder = ClientProtos.Get.newBuilder();
@@ -1207,7 +1207,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Create a protocol buffer Mutate based on a client Mutation nn * @return a protobuf'd Mutation n
+   * Create a protocol buffer Mutate based on a client Mutation
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutation(final MutationType type, final Mutation mutation,
     final long nonce) throws IOException {
@@ -1256,8 +1257,8 @@ public final class ProtobufUtil {
 
   /**
    * Create a protocol buffer MutationProto based on a client Mutation. Does NOT include data.
-   * Understanding is that the Cell will be transported other than via protobuf. nnn * @return a
+   * Understanding is that the Cell will be transported other than via protobuf.
-   * protobuf'd Mutation n
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutationNoData(final MutationType type, final Mutation mutation,
     final MutationProto.Builder builder) throws IOException {
@@ -1266,8 +1267,8 @@ public final class ProtobufUtil {
 
   /**
    * Create a protocol buffer MutationProto based on a client Mutation. Does NOT include data.
-   * Understanding is that the Cell will be transported other than via protobuf. nn * @return a
+   * Understanding is that the Cell will be transported other than via protobuf.
-   * protobuf'd Mutation n
+   * @return a protobuf'd Mutation
    */
   public static MutationProto toMutationNoData(final MutationType type, final Mutation mutation)
     throws IOException {
@@ -1293,8 +1294,8 @@ public final class ProtobufUtil {
 
   /**
    * Code shared by {@link #toMutation(MutationType, Mutation)} and
-   * {@link #toMutationNoData(MutationType, Mutation)} nn * @return A partly-filled out protobuf'd
+   * {@link #toMutationNoData(MutationType, Mutation)}
-   * Mutation.
+   * @return A partly-filled out protobuf'd Mutation.
    */
   private static MutationProto.Builder getMutationBuilderAndSetCommonFields(final MutationType type,
     final Mutation mutation, MutationProto.Builder builder) {
@@ -1427,7 +1428,7 @@ public final class ProtobufUtil {
    * Convert a protocol buffer Result to a client Result
    * @param proto   the protocol buffer Result to convert
    * @param scanner Optional cell scanner.
-   * @return the converted client Result n
+   * @return the converted client Result
    */
   public static Result toResult(final ClientProtos.Result proto, final CellScanner scanner)
     throws IOException {
@@ -1542,8 +1543,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a delete KeyValue type to protocol buffer DeleteType. n * @return protocol buffer
+   * Convert a delete KeyValue type to protocol buffer DeleteType.
-   * DeleteType n
+   * @return protocol buffer DeleteType
    */
   public static DeleteType toDeleteType(KeyValue.Type type) throws IOException {
     switch (type) {
@@ -1563,7 +1564,7 @@ public final class ProtobufUtil {
   /**
    * Convert a protocol buffer DeleteType to delete KeyValue type.
    * @param type The DeleteType
-   * @return The type. n
+   * @return The type.
    */
   public static KeyValue.Type fromDeleteType(DeleteType type) throws IOException {
     switch (type) {
@@ -1654,7 +1655,7 @@ public final class ProtobufUtil {
   }
 
   /**
-   * A helper to close a region given a region name using admin protocol. nnn
+   * A helper to close a region given a region name using admin protocol.
    */
   public static void closeRegion(final RpcController controller,
     final AdminService.BlockingInterface admin, final ServerName server, final byte[] regionName)
@@ -1669,7 +1670,7 @@ public final class ProtobufUtil {
   }
 
   /**
-   * A helper to warmup a region given a region name using admin protocol nn *
+   * A helper to warmup a region given a region name using admin protocol
    */
   public static void warmupRegion(final RpcController controller,
     final AdminService.BlockingInterface admin,
@@ -1686,7 +1687,7 @@ public final class ProtobufUtil {
   }
 
   /**
-   * A helper to open a region using admin protocol. nnn
+   * A helper to open a region using admin protocol.
    */
   public static void openRegion(final RpcController controller,
     final AdminService.BlockingInterface admin, ServerName server,
@@ -1700,8 +1701,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * A helper to get the all the online regions on a region server using admin protocol. n * @return
+   * A helper to get the all the online regions on a region server using admin protocol.
-   * a list of online region info n
+   * @return a list of online region info
    */
   public static List<org.apache.hadoop.hbase.client.RegionInfo>
     getOnlineRegions(final AdminService.BlockingInterface admin) throws IOException {
@@ -2034,7 +2035,8 @@ public final class ProtobufUtil {
   /**
    * Return short version of Message toString'd, shorter than TextFormat#shortDebugString. Tries to
    * NOT print out data both because it can be big but also so we do not have data in our logs. Use
-   * judiciously. n * @return toString of passed <code>m</code>
+   * judiciously.
+   * @return toString of passed <code>m</code>
    */
   public static String getShortTextFormat(Message m) {
     if (m == null) return "null";
@@ -2181,8 +2183,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer CellVisibility to a client CellVisibility n * @return the converted
+   * Convert a protocol buffer CellVisibility to a client CellVisibility
-   * client CellVisibility
+   * @return the converted client CellVisibility
    */
   public static CellVisibility toCellVisibility(ClientProtos.CellVisibility proto) {
     if (proto == null) return null;
@@ -2190,8 +2192,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer CellVisibility bytes to a client CellVisibility n * @return the
+   * Convert a protocol buffer CellVisibility bytes to a client CellVisibility
-   * converted client CellVisibility n
+   * @return the converted client CellVisibility
    */
   public static CellVisibility toCellVisibility(byte[] protoBytes) throws DeserializationException {
     if (protoBytes == null) return null;
@@ -2207,8 +2209,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Create a protocol buffer CellVisibility based on a client CellVisibility. n * @return a
+   * Create a protocol buffer CellVisibility based on a client CellVisibility.
-   * protocol buffer CellVisibility
+   * @return a protocol buffer CellVisibility
    */
   public static ClientProtos.CellVisibility toCellVisibility(CellVisibility cellVisibility) {
     ClientProtos.CellVisibility.Builder builder = ClientProtos.CellVisibility.newBuilder();
@@ -2217,8 +2219,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer Authorizations to a client Authorizations n * @return the converted
+   * Convert a protocol buffer Authorizations to a client Authorizations
-   * client Authorizations
+   * @return the converted client Authorizations
    */
   public static Authorizations toAuthorizations(ClientProtos.Authorizations proto) {
     if (proto == null) return null;
@@ -2226,8 +2228,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer Authorizations bytes to a client Authorizations n * @return the
+   * Convert a protocol buffer Authorizations bytes to a client Authorizations
-   * converted client Authorizations n
+   * @return the converted client Authorizations
    */
   public static Authorizations toAuthorizations(byte[] protoBytes) throws DeserializationException {
     if (protoBytes == null) return null;
@@ -2243,8 +2245,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Create a protocol buffer Authorizations based on a client Authorizations. n * @return a
+   * Create a protocol buffer Authorizations based on a client Authorizations.
-   * protocol buffer Authorizations
+   * @return a protocol buffer Authorizations
    */
   public static ClientProtos.Authorizations toAuthorizations(Authorizations authorizations) {
     ClientProtos.Authorizations.Builder builder = ClientProtos.Authorizations.newBuilder();
@@ -2255,8 +2257,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer TimeUnit to a client TimeUnit n * @return the converted client
+   * Convert a protocol buffer TimeUnit to a client TimeUnit
-   * TimeUnit
+   * @return the converted client TimeUnit
    */
   public static TimeUnit toTimeUnit(final HBaseProtos.TimeUnit proto) {
     switch (proto) {
@@ -2279,8 +2281,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a client TimeUnit to a protocol buffer TimeUnit n * @return the converted protocol
+   * Convert a client TimeUnit to a protocol buffer TimeUnit
-   * buffer TimeUnit
+   * @return the converted protocol buffer TimeUnit
    */
   public static HBaseProtos.TimeUnit toProtoTimeUnit(final TimeUnit timeUnit) {
     switch (timeUnit) {
@@ -2303,8 +2305,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer ThrottleType to a client ThrottleType n * @return the converted
+   * Convert a protocol buffer ThrottleType to a client ThrottleType
-   * client ThrottleType
+   * @return the converted client ThrottleType
    */
   public static ThrottleType toThrottleType(final QuotaProtos.ThrottleType proto) {
     switch (proto) {
@@ -2332,8 +2334,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a client ThrottleType to a protocol buffer ThrottleType n * @return the converted
+   * Convert a client ThrottleType to a protocol buffer ThrottleType
-   * protocol buffer ThrottleType
+   * @return the converted protocol buffer ThrottleType
    */
   public static QuotaProtos.ThrottleType toProtoThrottleType(final ThrottleType type) {
     switch (type) {
@@ -2361,8 +2363,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer QuotaScope to a client QuotaScope n * @return the converted client
+   * Convert a protocol buffer QuotaScope to a client QuotaScope
-   * QuotaScope
+   * @return the converted client QuotaScope
    */
   public static QuotaScope toQuotaScope(final QuotaProtos.QuotaScope proto) {
     switch (proto) {
@@ -2375,8 +2377,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a client QuotaScope to a protocol buffer QuotaScope n * @return the converted protocol
+   * Convert a client QuotaScope to a protocol buffer QuotaScope
-   * buffer QuotaScope
+   * @return the converted protocol buffer QuotaScope
    */
   public static QuotaProtos.QuotaScope toProtoQuotaScope(final QuotaScope scope) {
     switch (scope) {
@@ -2389,8 +2391,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a protocol buffer QuotaType to a client QuotaType n * @return the converted client
+   * Convert a protocol buffer QuotaType to a client QuotaType
-   * QuotaType
+   * @return the converted client QuotaType
    */
   public static QuotaType toQuotaScope(final QuotaProtos.QuotaType proto) {
     switch (proto) {
@@ -2403,8 +2405,8 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Convert a client QuotaType to a protocol buffer QuotaType n * @return the converted protocol
+   * Convert a client QuotaType to a protocol buffer QuotaType
-   * buffer QuotaType
+   * @return the converted protocol buffer QuotaType
    */
   public static QuotaProtos.QuotaType toProtoQuotaScope(final QuotaType type) {
     switch (type) {
@@ -2531,7 +2533,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeDelimitedFrom avoid the hard-coded 64MB limit for decoding
    * buffers
    * @param builder current message builder
-   * @param in      Inputsream with delimited protobuf data n
+   * @param in      Inputsream with delimited protobuf data
    */
   public static void mergeDelimitedFrom(Message.Builder builder, InputStream in)
     throws IOException {
@@ -2553,7 +2555,7 @@ public final class ProtobufUtil {
    * where the message size is known
    * @param builder current message builder
    * @param in      InputStream containing protobuf data
-   * @param size    known size of protobuf data n
+   * @param size    known size of protobuf data
    */
   public static void mergeFrom(Message.Builder builder, InputStream in, int size)
     throws IOException {
@@ -2567,7 +2569,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers
    * where the message size is not known
    * @param builder current message builder
-   * @param in      InputStream containing protobuf data n
+   * @param in      InputStream containing protobuf data
    */
   public static void mergeFrom(Message.Builder builder, InputStream in) throws IOException {
     final CodedInputStream codedInput = CodedInputStream.newInstance(in);
@@ -2580,7 +2582,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers when
    * working with ByteStrings
    * @param builder current message builder
-   * @param bs      ByteString containing the n
+   * @param bs      ByteString containing the
    */
   public static void mergeFrom(Message.Builder builder, ByteString bs) throws IOException {
     final CodedInputStream codedInput = bs.newCodedInput();
@@ -2593,7 +2595,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers when
    * working with byte arrays
    * @param builder current message builder
-   * @param b       byte array n
+   * @param b       byte array
    */
   public static void mergeFrom(Message.Builder builder, byte[] b) throws IOException {
     final CodedInputStream codedInput = CodedInputStream.newInstance(b);
@@ -2606,7 +2608,7 @@ public final class ProtobufUtil {
    * This version of protobuf's mergeFrom avoids the hard-coded 64MB limit for decoding buffers when
    * working with byte arrays
    * @param builder current message builder
-   * @param b       byte array nnn
+   * @param b       byte array
    */
   public static void mergeFrom(Message.Builder builder, byte[] b, int offset, int length)
     throws IOException {
@@ -2778,7 +2780,7 @@ public final class ProtobufUtil {
 
   /**
    * Creates {@link CompactionState} from {@link GetRegionInfoResponse.CompactionState} state
-   * @param state the protobuf CompactionState n
+   * @param state the protobuf CompactionState
    */
   public static CompactionState createCompactionState(GetRegionInfoResponse.CompactionState state) {
     return CompactionState.valueOf(state.toString());
@@ -2790,7 +2792,7 @@ public final class ProtobufUtil {
 
   /**
    * Creates {@link CompactionState} from {@link RegionLoad.CompactionState} state
-   * @param state the protobuf CompactionState n
+   * @param state the protobuf CompactionState
    */
   public static CompactionState
     createCompactionStateForRegionLoad(RegionLoad.CompactionState state) {
@@ -2895,9 +2897,7 @@ public final class ProtobufUtil {
       stats.getCompactionPressure());
   }
 
-  /**
+  /** Returns A String version of the passed in <code>msg</code> */
-   * n * @return A String version of the passed in <code>msg</code>
-   */
   public static String toText(Message msg) {
     return TextFormat.shortDebugString(msg);
   }
@@ -2907,7 +2907,7 @@ public final class ProtobufUtil {
   }
 
   /**
-   * Contain ServiceException inside here. Take a callable that is doing our pb rpc and run it. n
+   * Contain ServiceException inside here. Take a callable that is doing our pb rpc and run it.
    */
   public static <T> T call(Callable<T> callable) throws IOException {
     try {
@@ -3018,7 +3018,7 @@ public final class ProtobufUtil {
    *             magic and that is then followed by a protobuf that has a serialized
    *             {@link ServerName} in it.
    * @return Returns null if <code>data</code> is null else converts passed data to a ServerName
-   *         instance. n
+   *         instance.
    */
   public static ServerName parseServerNameFrom(final byte[] data) throws DeserializationException {
     if (data == null || data.length <= 0) return null;

hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java

@@ -193,7 +193,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MutateRequest for a client increment nnnnnn * @return a mutate request
+   * Create a protocol buffer MutateRequest for a client increment
+   * @return a mutate request
    */
   public static MutateRequest buildIncrementRequest(final byte[] regionName, final byte[] row,
     final byte[] family, final byte[] qualifier, final long amount, final Durability durability,
@@ -227,7 +228,7 @@ public final class RequestConverter {
 
   /**
    * Create a protocol buffer MutateRequest for a conditioned put/delete/increment/append
-   * @return a mutate request n
+   * @return a mutate request
    */
   public static MutateRequest buildMutateRequest(final byte[] regionName, final byte[] row,
     final byte[] family, final byte[] qualifier, final CompareOperator op, final byte[] value,
@@ -247,7 +248,7 @@ public final class RequestConverter {
 
   /**
    * Create a protocol buffer MultiRequest for conditioned row mutations
-   * @return a multi request n
+   * @return a multi request
    */
   public static ClientProtos.MultiRequest buildMultiRequest(final byte[] regionName,
     final byte[] row, final byte[] family, final byte[] qualifier, final CompareOperator op,
@@ -304,7 +305,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MutateRequest for a put nn * @return a mutate request n
+   * Create a protocol buffer MutateRequest for a put
+   * @return a mutate request
    */
   public static MutateRequest buildMutateRequest(final byte[] regionName, final Put put)
     throws IOException {
@@ -316,7 +318,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MutateRequest for an append nn * @return a mutate request n
+   * Create a protocol buffer MutateRequest for an append
+   * @return a mutate request
    */
   public static MutateRequest buildMutateRequest(final byte[] regionName, final Append append,
     long nonceGroup, long nonce) throws IOException {
@@ -332,7 +335,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MutateRequest for a client increment nn * @return a mutate request
+   * Create a protocol buffer MutateRequest for a client increment
+   * @return a mutate request
    */
   public static MutateRequest buildMutateRequest(final byte[] regionName, final Increment increment,
     final long nonceGroup, final long nonce) throws IOException {
@@ -348,7 +352,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MutateRequest for a delete nn * @return a mutate request n
+   * Create a protocol buffer MutateRequest for a delete
+   * @return a mutate request
    */
   public static MutateRequest buildMutateRequest(final byte[] regionName, final Delete delete)
     throws IOException {
@@ -368,7 +373,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer ScanRequest for a client Scan nnnn * @return a scan request n
+   * Create a protocol buffer ScanRequest for a client Scan
+   * @return a scan request
    */
   public static ScanRequest buildScanRequest(byte[] regionName, Scan scan, int numberOfRows,
     boolean closeScanner) throws IOException {
@@ -388,7 +394,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer ScanRequest for a scanner id nnn * @return a scan request
+   * Create a protocol buffer ScanRequest for a scanner id
+   * @return a scan request
    */
   public static ScanRequest buildScanRequest(long scannerId, int numberOfRows, boolean closeScanner,
     boolean trackMetrics) {
@@ -403,7 +410,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer ScanRequest for a scanner id nnnn * @return a scan request
+   * Create a protocol buffer ScanRequest for a scanner id
+   * @return a scan request
    */
   public static ScanRequest buildScanRequest(long scannerId, int numberOfRows, boolean closeScanner,
     long nextCallSeq, boolean trackMetrics, boolean renew, int limitOfRows) {
@@ -423,7 +431,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer bulk load request nnnnn * @return a bulk load request
+   * Create a protocol buffer bulk load request
+   * @return a bulk load request
    */
   public static BulkLoadHFileRequest buildBulkLoadHFileRequest(
     final List<Pair<byte[], String>> familyPaths, final byte[] regionName, boolean assignSeqNum,
@@ -433,7 +442,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer bulk load request nnnnnn * @return a bulk load request
+   * Create a protocol buffer bulk load request
+   * @return a bulk load request
    */
   public static BulkLoadHFileRequest buildBulkLoadHFileRequest(
     final List<Pair<byte[], String>> familyPaths, final byte[] regionName, boolean assignSeqNum,
@@ -490,7 +500,7 @@ public final class RequestConverter {
    * @param mutationBuilder     mutationBuilder to be used to build mutation.
    * @param nonceGroup          nonceGroup to be applied.
    * @param indexMap            Map of created RegionAction to the original index for a
-   *                            RowMutations/CheckAndMutate within the original list of actions n
+   *                            RowMutations/CheckAndMutate within the original list of actions
    */
   public static void buildRegionActions(final byte[] regionName, final List<Action> actions,
     final MultiRequest.Builder multiRequestBuilder, final RegionAction.Builder regionActionBuilder,
@@ -653,7 +663,7 @@ public final class RequestConverter {
    * @param mutationBuilder     mutationBuilder to be used to build mutation.
    * @param nonceGroup          nonceGroup to be applied.
    * @param indexMap            Map of created RegionAction to the original index for a
-   *                            RowMutations/CheckAndMutate within the original list of actions n
+   *                            RowMutations/CheckAndMutate within the original list of actions
    */
   public static void buildNoDataRegionActions(final byte[] regionName,
     final Iterable<Action> actions, final List<CellScannable> cells,
@@ -1021,7 +1031,8 @@ public final class RequestConverter {
   /**
    * Create a CompactRegionRequest for a given region name
    * @param regionName the name of the region to get info
-   * @param major      indicator if it is a major compaction n * @return a CompactRegionRequest
+   * @param major      indicator if it is a major compaction
+   * @return a CompactRegionRequest
    */
   public static CompactRegionRequest buildCompactRegionRequest(byte[] regionName, boolean major,
     byte[] columnFamily) {
@@ -1079,7 +1090,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer AddColumnRequest nn * @return an AddColumnRequest
+   * Create a protocol buffer AddColumnRequest
+   * @return an AddColumnRequest
    */
   public static AddColumnRequest buildAddColumnRequest(final TableName tableName,
     final ColumnFamilyDescriptor column, final long nonceGroup, final long nonce) {
@@ -1092,7 +1104,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer DeleteColumnRequest nn * @return a DeleteColumnRequest
+   * Create a protocol buffer DeleteColumnRequest
+   * @return a DeleteColumnRequest
    */
   public static DeleteColumnRequest buildDeleteColumnRequest(final TableName tableName,
     final byte[] columnName, final long nonceGroup, final long nonce) {
@@ -1105,7 +1118,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer ModifyColumnRequest nn * @return an ModifyColumnRequest
+   * Create a protocol buffer ModifyColumnRequest
+   * @return an ModifyColumnRequest
    */
   public static ModifyColumnRequest buildModifyColumnRequest(final TableName tableName,
     final ColumnFamilyDescriptor column, final long nonceGroup, final long nonce) {
@@ -1131,7 +1145,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer MoveRegionRequest nn * @return A MoveRegionRequest
+   * Create a protocol buffer MoveRegionRequest
+   * @return A MoveRegionRequest
    */
   public static MoveRegionRequest buildMoveRegionRequest(byte[] encodedRegionName,
     ServerName destServerName) {
@@ -1172,7 +1187,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Create a protocol buffer AssignRegionRequest n * @return an AssignRegionRequest
+   * Create a protocol buffer AssignRegionRequest
+   * @return an AssignRegionRequest
    */
   public static AssignRegionRequest buildAssignRegionRequest(final byte[] regionName) {
     AssignRegionRequest.Builder builder = AssignRegionRequest.newBuilder();
@@ -1181,7 +1197,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer UnassignRegionRequest n * @return an UnassignRegionRequest
+   * Creates a protocol buffer UnassignRegionRequest
+   * @return an UnassignRegionRequest
    */
   public static UnassignRegionRequest buildUnassignRegionRequest(final byte[] regionName) {
     UnassignRegionRequest.Builder builder = UnassignRegionRequest.newBuilder();
@@ -1190,7 +1207,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer OfflineRegionRequest n * @return an OfflineRegionRequest
+   * Creates a protocol buffer OfflineRegionRequest
+   * @return an OfflineRegionRequest
    */
   public static OfflineRegionRequest buildOfflineRegionRequest(final byte[] regionName) {
     OfflineRegionRequest.Builder builder = OfflineRegionRequest.newBuilder();
@@ -1199,7 +1217,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer DeleteTableRequest n * @return a DeleteTableRequest
+   * Creates a protocol buffer DeleteTableRequest
+   * @return a DeleteTableRequest
    */
   public static DeleteTableRequest buildDeleteTableRequest(final TableName tableName,
     final long nonceGroup, final long nonce) {
@@ -1227,7 +1246,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer EnableTableRequest n * @return an EnableTableRequest
+   * Creates a protocol buffer EnableTableRequest
+   * @return an EnableTableRequest
    */
   public static EnableTableRequest buildEnableTableRequest(final TableName tableName,
     final long nonceGroup, final long nonce) {
@@ -1239,7 +1259,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer DisableTableRequest n * @return a DisableTableRequest
+   * Creates a protocol buffer DisableTableRequest
+   * @return a DisableTableRequest
    */
   public static DisableTableRequest buildDisableTableRequest(final TableName tableName,
     final long nonceGroup, final long nonce) {
@@ -1251,7 +1272,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer CreateTableRequest nn * @return a CreateTableRequest
+   * Creates a protocol buffer CreateTableRequest
+   * @return a CreateTableRequest
    */
   public static CreateTableRequest buildCreateTableRequest(final TableDescriptor tableDescriptor,
     final byte[][] splitKeys, final long nonceGroup, final long nonce) {
@@ -1268,7 +1290,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer ModifyTableRequest nn * @return a ModifyTableRequest
+   * Creates a protocol buffer ModifyTableRequest
+   * @return a ModifyTableRequest
    */
   public static ModifyTableRequest buildModifyTableRequest(final TableName tableName,
     final TableDescriptor tableDesc, final long nonceGroup, final long nonce) {
@@ -1292,7 +1315,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer GetSchemaAlterStatusRequest n * @return a GetSchemaAlterStatusRequest
+   * Creates a protocol buffer GetSchemaAlterStatusRequest
+   * @return a GetSchemaAlterStatusRequest
    */
   public static GetSchemaAlterStatusRequest
     buildGetSchemaAlterStatusRequest(final TableName tableName) {
@@ -1302,7 +1326,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer GetTableDescriptorsRequest n * @return a GetTableDescriptorsRequest
+   * Creates a protocol buffer GetTableDescriptorsRequest
+   * @return a GetTableDescriptorsRequest
    */
   public static GetTableDescriptorsRequest
     buildGetTableDescriptorsRequest(final List<TableName> tableNames) {
@@ -1409,7 +1434,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer SetBalancerRunningRequest nn * @return a SetBalancerRunningRequest
+   * Creates a protocol buffer SetBalancerRunningRequest
+   * @return a SetBalancerRunningRequest
    */
   public static SetBalancerRunningRequest buildSetBalancerRunningRequest(boolean on,
     boolean synchronous) {
@@ -1494,8 +1520,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a request for querying the master the last flushed sequence Id for a region n * @return
+   * Creates a request for querying the master the last flushed sequence Id for a region
-   * A {@link GetLastFlushedSequenceIdRequest}
+   * @return A {@link GetLastFlushedSequenceIdRequest}
    */
   public static GetLastFlushedSequenceIdRequest
     buildGetLastFlushedSequenceIdRequest(byte[] regionName) {
@@ -1546,7 +1572,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer SetNormalizerRunningRequest n * @return a SetNormalizerRunningRequest
+   * Creates a protocol buffer SetNormalizerRunningRequest
+   * @return a SetNormalizerRunningRequest
    */
   public static SetNormalizerRunningRequest buildSetNormalizerRunningRequest(boolean on) {
     return SetNormalizerRunningRequest.newBuilder().setOn(on).build();
@@ -1654,7 +1681,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer CreateNamespaceRequest n * @return a CreateNamespaceRequest
+   * Creates a protocol buffer CreateNamespaceRequest
+   * @return a CreateNamespaceRequest
    */
   public static CreateNamespaceRequest
     buildCreateNamespaceRequest(final NamespaceDescriptor descriptor) {
@@ -1664,7 +1692,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer ModifyNamespaceRequest n * @return a ModifyNamespaceRequest
+   * Creates a protocol buffer ModifyNamespaceRequest
+   * @return a ModifyNamespaceRequest
    */
   public static ModifyNamespaceRequest
     buildModifyNamespaceRequest(final NamespaceDescriptor descriptor) {
@@ -1674,7 +1703,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer DeleteNamespaceRequest n * @return a DeleteNamespaceRequest
+   * Creates a protocol buffer DeleteNamespaceRequest
+   * @return a DeleteNamespaceRequest
    */
   public static DeleteNamespaceRequest buildDeleteNamespaceRequest(final String name) {
     DeleteNamespaceRequest.Builder builder = DeleteNamespaceRequest.newBuilder();
@@ -1683,8 +1713,8 @@ public final class RequestConverter {
   }
 
   /**
-   * Creates a protocol buffer GetNamespaceDescriptorRequest n * @return a
+   * Creates a protocol buffer GetNamespaceDescriptorRequest
-   * GetNamespaceDescriptorRequest
+   * @return a GetNamespaceDescriptorRequest
    */
   public static GetNamespaceDescriptorRequest
     buildGetNamespaceDescriptorRequest(final String name) {
@@ -1801,7 +1831,7 @@ public final class RequestConverter {
 
   /**
    * Creates IsSnapshotCleanupEnabledRequest to determine if auto snapshot cleanup based on TTL
-   * expiration is turned on n
+   * expiration is turned on
    */
   public static IsSnapshotCleanupEnabledRequest buildIsSnapshotCleanupEnabledRequest() {
     return IsSnapshotCleanupEnabledRequest.newBuilder().build();

hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ResponseConverter.java

@@ -90,7 +90,7 @@ public final class ResponseConverter {
    * @param request  the original protocol buffer MultiRequest
    * @param response the protocol buffer MultiResponse to convert
    * @param cells    Cells to go with the passed in <code>proto</code>. Can be null.
-   * @return the results that were in the MultiResponse (a Result or an Exception). n
+   * @return the results that were in the MultiResponse (a Result or an Exception).
    */
   public static org.apache.hadoop.hbase.client.MultiResponse getResults(final MultiRequest request,
     final MultiResponse response, final CellScanner cells) throws IOException {
@@ -103,7 +103,7 @@ public final class ResponseConverter {
    * @param indexMap Used to support RowMutations/CheckAndMutate in batch
    * @param response the protocol buffer MultiResponse to convert
    * @param cells    Cells to go with the passed in <code>proto</code>. Can be null.
-   * @return the results that were in the MultiResponse (a Result or an Exception). n
+   * @return the results that were in the MultiResponse (a Result or an Exception).
    */
   public static org.apache.hadoop.hbase.client.MultiResponse getResults(final MultiRequest request,
     final Map<Integer, Integer> indexMap, final MultiResponse response, final CellScanner cells)
@@ -265,7 +265,8 @@ public final class ResponseConverter {
   }
 
   /**
-   * Wrap a throwable to an action result. n * @return an action result builder
+   * Wrap a throwable to an action result.
+   * @return an action result builder
    */
   public static ResultOrException.Builder buildActionResult(final Throwable t) {
     ResultOrException.Builder builder = ResultOrException.newBuilder();
@@ -274,7 +275,8 @@ public final class ResponseConverter {
   }
 
   /**
-   * Wrap a throwable to an action result. n * @return an action result builder
+   * Wrap a throwable to an action result.
+   * @return an action result builder
    */
   public static ResultOrException.Builder buildActionResult(final ClientProtos.Result r) {
     ResultOrException.Builder builder = ResultOrException.newBuilder();
@@ -282,9 +284,7 @@ public final class ResponseConverter {
     return builder;
   }
 
-  /**
+  /** Returns NameValuePair of the exception name to stringified version os exception. */
-   * n * @return NameValuePair of the exception name to stringified version os exception.
-   */
   public static NameBytesPair buildException(final Throwable t) {
     NameBytesPair.Builder parameterBuilder = NameBytesPair.newBuilder();
     parameterBuilder.setName(t.getClass().getName());
@@ -325,7 +325,8 @@ public final class ResponseConverter {
   }
 
   /**
-   * A utility to build a GetServerInfoResponse. nn * @return the response
+   * A utility to build a GetServerInfoResponse.
+   * @return the response
    */
   public static GetServerInfoResponse buildGetServerInfoResponse(final ServerName serverName,
     final int webuiPort) {
@@ -340,7 +341,8 @@ public final class ResponseConverter {
   }
 
   /**
-   * A utility to build a GetOnlineRegionResponse. n * @return the response
+   * A utility to build a GetOnlineRegionResponse.
+   * @return the response
    */
   public static GetOnlineRegionResponse
     buildGetOnlineRegionResponse(final List<RegionInfo> regions) {
@@ -424,7 +426,7 @@ public final class ResponseConverter {
   }
 
   /**
-   * Create Results from the cells using the cells meta data. nnn
+   * Create Results from the cells using the cells meta data.
    */
   public static Result[] getResults(CellScanner cellScanner, ScanResponse response)
     throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/util/Writables.java

@@ -91,7 +91,7 @@ public class Writables {
    * @return The passed Writable after its readFields has been called fed by the passed
    *         <code>bytes</code> array or IllegalArgumentException if passed null or an empty
    *         <code>bytes</code> array.
-   * @throws IOException e n
+   * @throws IOException e
    */
   public static Writable getWritable(final byte[] bytes, final Writable w) throws IOException {
     return getWritable(bytes, 0, bytes.length, w);
@@ -107,7 +107,7 @@ public class Writables {
    * @return The passed Writable after its readFields has been called fed by the passed
    *         <code>bytes</code> array or IllegalArgumentException if passed null or an empty
    *         <code>bytes</code> array.
-   * @throws IOException e n
+   * @throws IOException e
    */
   public static Writable getWritable(final byte[] bytes, final int offset, final int length,
     final Writable w) throws IOException {

hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZNodePaths.java

@@ -148,7 +148,7 @@ public class ZNodePaths {
 
   /**
    * Parses the meta replicaId from the passed path.
-   * @param path the name of the full path which includes baseZNode. n
+   * @param path the name of the full path which includes baseZNode.
    */
   public int getMetaReplicaIdFromPath(String path) {
     // Extract the znode from path. The prefix is of the following format.
@@ -159,7 +159,7 @@ public class ZNodePaths {
 
   /**
    * Parse the meta replicaId from the passed znode
-   * @param znode the name of the znode, does not include baseZNode n
+   * @param znode the name of the znode, does not include baseZNode
    */
   public int getMetaReplicaIdFromZNode(String znode) {
     return znode.equals(metaZNodePrefix)

hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestClientNoCluster.java

@@ -212,7 +212,7 @@ public class TestClientNoCluster extends Configured implements Tool {
   }
 
   /**
-   * Test that operation timeout prevails over rpc default timeout and retries, etc. n
+   * Test that operation timeout prevails over rpc default timeout and retries, etc.
    */
   @Test
   public void testRpcTimeout() throws IOException {
@@ -600,8 +600,8 @@ public class TestClientNoCluster extends Configured implements Tool {
   }
 
   /**
-   * @param name region name or encoded region name. n * @return True if we are dealing with a
+   * @param name region name or encoded region name.
-   *             hbase:meta region.
+   * @return True if we are dealing with a hbase:meta region.
    */
   static boolean isMetaRegion(final byte[] name, final RegionSpecifierType type) {
     switch (type) {
@@ -656,8 +656,9 @@ public class TestClientNoCluster extends Configured implements Tool {
 
   /**
    * Format passed integer. Zero-pad. Copied from hbase-server PE class and small amendment. Make
-   * them share. n * @return Returns zero-prefixed 10-byte wide decimal version of passed number
+   * them share.
-   * (Does absolute in case number is negative).
+   * @return Returns zero-prefixed 10-byte wide decimal version of passed number (Does absolute in
+   *         case number is negative).
    */
   private static byte[] format(final long number) {
     byte[] b = new byte[10];
@@ -669,9 +670,7 @@ public class TestClientNoCluster extends Configured implements Tool {
     return b;
   }
 
-  /**
+  /** Returns <code>count</code> regions */
-   * nn * @return <code>count</code> regions
-   */
   private static HRegionInfo[] makeHRegionInfos(final byte[] tableName, final int count,
     final long namespaceSpan) {
     byte[] startKey = HConstants.EMPTY_BYTE_ARRAY;
@@ -691,9 +690,7 @@ public class TestClientNoCluster extends Configured implements Tool {
     return hris;
   }
 
-  /**
+  /** Returns Return <code>count</code> servernames. */
-   * n * @return Return <code>count</code> servernames.
-   */
   private static ServerName[] makeServerNames(final int count) {
     ServerName[] sns = new ServerName[count];
     for (int i = 0; i < count; i++) {
@@ -736,7 +733,7 @@ public class TestClientNoCluster extends Configured implements Tool {
   }
 
   /**
-   * Code for each 'client' to run. nnnn
+   * Code for each 'client' to run.
    */
   static void cycle(int id, final Configuration c, final Connection sharedConnection)
     throws IOException {
@@ -853,7 +850,7 @@ public class TestClientNoCluster extends Configured implements Tool {
 
   /**
    * Run a client instance against a faked up server.
-   * @param args TODO n
+   * @param args TODO
    */
   public static void main(String[] args) throws Exception {
     System.exit(ToolRunner.run(HBaseConfiguration.create(), new TestClientNoCluster(), args));

hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestDeleteTimeStamp.java

@@ -42,7 +42,7 @@ public class TestDeleteTimeStamp {
   private static final byte[] QUALIFIER = Bytes.toBytes("testQualifier");
 
   /*
-   * Test for verifying that the timestamp in delete object is being honored. n
+   * Test for verifying that the timestamp in delete object is being honored.
    */
   @Test
   public void testTimeStamp() {

hbase-common/src/main/java/org/apache/hadoop/hbase/AuthUtil.java

@@ -100,7 +100,8 @@ public final class AuthUtil {
   /**
    * For kerberized cluster, return login user (from kinit or from keytab if specified). For
    * non-kerberized cluster, return system user.
-   * @param conf configuartion file n * @throws IOException login exception
+   * @param conf configuartion file
+   * @throws IOException login exception
    */
   @InterfaceAudience.Private
   public static User loginClient(Configuration conf) throws IOException {
@@ -160,7 +161,8 @@ public final class AuthUtil {
    * <p>
    * NOT recommend to use to method unless you're sure what you're doing, it is for canary only.
    * Please use User#loginClient.
-   * @param conf configuration file n * @throws IOException login exception
+   * @param conf configuration file
+   * @throws IOException login exception
    */
   private static User loginClientAsService(Configuration conf) throws IOException {
     UserProvider provider = UserProvider.instantiate(conf);

hbase-common/src/main/java/org/apache/hadoop/hbase/ByteBufferKeyOnlyKeyValue.java

@@ -54,7 +54,7 @@ public class ByteBufferKeyOnlyKeyValue extends ByteBufferExtendedCell {
 
   /**
    * A setter that helps to avoid object creation every time and whenever there is a need to create
-   * new OffheapKeyOnlyKeyValue. nnn
+   * new OffheapKeyOnlyKeyValue.
    */
   public void setKey(ByteBuffer key, int offset, int length) {
     setKey(key, offset, length, ByteBufferUtils.toShort(key, offset));

hbase-common/src/main/java/org/apache/hadoop/hbase/CellBuilder.java

@@ -48,7 +48,7 @@ public interface CellBuilder {
   Cell build();
 
   /**
-   * Remove all internal elements from builder. n
+   * Remove all internal elements from builder.
    */
   CellBuilder clear();
 }

hbase-common/src/main/java/org/apache/hadoop/hbase/CellComparatorImpl.java

@@ -662,9 +662,8 @@ public class CellComparatorImpl implements CellComparator {
   /**
    * Compares the row part of the cell with a simple plain byte[] like the stopRow in Scan. This
    * should be used with context where for hbase:meta cells the
-   * {{@link MetaCellComparator#META_COMPARATOR} should be used n * the cell to be compared n * the
+   * {{@link MetaCellComparator#META_COMPARATOR} should be used the cell to be compared the kv
-   * kv serialized byte[] to be compared with n * the offset in the byte[] n * the length in the
+   * serialized byte[] to be compared with the offset in the byte[] the length in the byte[]
-   * byte[]
    * @return 0 if both cell and the byte[] are equal, 1 if the cell is bigger than byte[], -1
    *         otherwise
    */

hbase-common/src/main/java/org/apache/hadoop/hbase/CellUtil.java

@@ -584,9 +584,7 @@ public final class CellUtil {
     return PrivateCellUtil.createCell(cell, value, tags);
   }
 
-  /**
+  /** Returns CellScanner interface over <code>cellIterables</code> */
-   * Return CellScanner interface over <code>cellIterables</code>
-   */
   public static CellScanner
     createCellScanner(final List<? extends CellScannable> cellScannerables) {
     return new CellScanner() {
@@ -612,16 +610,14 @@ public final class CellUtil {
     };
   }
 
-  /**
+  /** Returns CellScanner interface over <code>cellIterable</code> */
-   * Return CellScanner interface over <code>cellIterable</code>
-   */
   public static CellScanner createCellScanner(final Iterable<Cell> cellIterable) {
     if (cellIterable == null) return null;
     return createCellScanner(cellIterable.iterator());
   }
 
   /**
-   * Return CellScanner interface over <code>cellIterable</code> or null if <code>cells</code> is
+   * Returns CellScanner interface over <code>cellIterable</code> or null if <code>cells</code> is
    * null
    */
   public static CellScanner createCellScanner(final Iterator<Cell> cells) {
@@ -644,9 +640,7 @@ public final class CellUtil {
     };
   }
 
-  /**
+  /** Returns CellScanner interface over <code>cellArray</code> */
-   * Return CellScanner interface over <code>cellArray</code>
-   */
   public static CellScanner createCellScanner(final Cell[] cellArray) {
     return new CellScanner() {
       private final Cell[] cells = cellArray;

hbase-common/src/main/java/org/apache/hadoop/hbase/CompoundConfiguration.java

@@ -145,7 +145,7 @@ public class CompoundConfiguration extends Configuration {
   /**
    * Add Bytes map to config list. This map is generally created by HTableDescriptor or
    * HColumnDescriptor, but can be abstractly used. The added configuration overrides the previous
-   * ones if there are name collisions. n * Bytes map
+   * ones if there are name collisions. Bytes map
    * @return this, for builder pattern
    */
   public CompoundConfiguration addBytesMap(final Map<Bytes, Bytes> map) {

hbase-common/src/main/java/org/apache/hadoop/hbase/ExtendedCell.java

@@ -41,7 +41,7 @@ public interface ExtendedCell extends RawCell, HeapSize {
    * &lt;tags&gt;</code>
    * @param out      Stream to which cell has to be written
    * @param withTags Whether to write tags.
-   * @return how many bytes are written. n
+   * @return how many bytes are written.
    */
   // TODO remove the boolean param once HBASE-16706 is done.
   default int write(OutputStream out, boolean withTags) throws IOException {

hbase-common/src/main/java/org/apache/hadoop/hbase/HBaseConfiguration.java

@@ -235,7 +235,7 @@ public class HBaseConfiguration extends Configuration {
    * @param conf    configuration instance for accessing the passwords
    * @param alias   the name of the password element
    * @param defPass the default password
-   * @return String password or default password n
+   * @return String password or default password
    */
   public static String getPassword(Configuration conf, String alias, String defPass)
     throws IOException {

hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValue.java

@@ -1840,8 +1840,8 @@ public class KeyValue implements ExtendedCell, Cloneable {
      * Compare columnFamily, qualifier, timestamp, and key type (everything except the row). This
      * method is used both in the normal comparator and the "same-prefix" comparator. Note that we
      * are assuming that row portions of both KVs have already been parsed and found identical, and
-     * we don't validate that assumption here. n * the length of the common prefix of the two
+     * we don't validate that assumption here. the length of the common prefix of the two key-values
-     * key-values being compared, including row length and row
+     * being compared, including row length and row
      */
     private int compareWithoutRow(int commonPrefix, byte[] left, int loffset, int llength,
       byte[] right, int roffset, int rlength, short rowlength) {

hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValueTestUtil.java

@@ -55,8 +55,8 @@ public class KeyValueTestUtil {
 
   /**
    * Checks whether KeyValues from kvCollection2 are contained in kvCollection1. The comparison is
-   * made without distinguishing MVCC version of the KeyValues nn * @return true if KeyValues from
+   * made without distinguishing MVCC version of the KeyValues
-   * kvCollection2 are contained in kvCollection1
+   * @return true if KeyValues from kvCollection2 are contained in kvCollection1
    */
   public static boolean containsIgnoreMvccVersion(Collection<? extends Cell> kvCollection1,
     Collection<? extends Cell> kvCollection2) {

hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValueUtil.java

@@ -58,8 +58,8 @@ public class KeyValueUtil {
 
   /**
    * Returns number of bytes this cell's key part would have been used if serialized as in
-   * {@link KeyValue}. Key includes rowkey, family, qualifier, timestamp and type. n * @return the
+   * {@link KeyValue}. Key includes rowkey, family, qualifier, timestamp and type.
-   * key length
+   * @return the key length
    */
   public static int keyLength(final Cell cell) {
     return keyLength(cell.getRowLength(), cell.getFamilyLength(), cell.getQualifierLength());
@@ -96,8 +96,8 @@ public class KeyValueUtil {
   }
 
   /**
-   * The position will be set to the beginning of the new ByteBuffer n * @return the Bytebuffer
+   * The position will be set to the beginning of the new ByteBuffer
-   * containing the key part of the cell
+   * @return the Bytebuffer containing the key part of the cell
    */
   public static ByteBuffer copyKeyToNewByteBuffer(final Cell cell) {
     byte[] bytes = new byte[keyLength(cell)];
@@ -107,8 +107,8 @@ public class KeyValueUtil {
   }
 
   /**
-   * Copies the key to a new KeyValue n * @return the KeyValue that consists only the key part of
+   * Copies the key to a new KeyValue
-   * the incoming cell
+   * @return the KeyValue that consists only the key part of the incoming cell
    */
   public static KeyValue toNewKeyCell(final Cell cell) {
     byte[] bytes = new byte[keyLength(cell)];
@@ -203,7 +203,7 @@ public class KeyValueUtil {
 
   /**
    * Creates a new KeyValue object positioned in the supplied ByteBuffer and sets the ByteBuffer's
-   * position to the start of the next KeyValue. Does not allocate a new array or copy data. nnn
+   * position to the start of the next KeyValue. Does not allocate a new array or copy data.
    */
   public static KeyValue nextShallowCopy(final ByteBuffer bb, final boolean includesMvccVersion,
     boolean includesTags) {
@@ -236,7 +236,8 @@ public class KeyValueUtil {
 
   /**
    * Decrement the timestamp. For tests (currently wasteful) Remember timestamps are sorted reverse
-   * chronologically. n * @return previous key
+   * chronologically.
+   * @return previous key
    */
   public static KeyValue previousKey(final KeyValue in) {
     return createFirstOnRow(CellUtil.cloneRow(in), CellUtil.cloneFamily(in),
@@ -246,9 +247,8 @@ public class KeyValueUtil {
   /**
    * Create a KeyValue for the specified row, family and qualifier that would be larger than or
    * equal to all other possible KeyValues that have the same row, family, qualifier. Used for
-   * reseeking. Should NEVER be returned to a client. n * row key n * row offset n * row length n *
+   * reseeking. Should NEVER be returned to a client. row key row offset row length family name
-   * family name n * family offset n * family length n * column qualifier n * qualifier offset n *
+   * family offset family length column qualifier qualifier offset qualifier length
-   * qualifier length
    * @return Last possible key on passed row, family, qualifier.
    */
   public static KeyValue createLastOnRow(final byte[] row, final int roffset, final int rlength,
@@ -408,11 +408,11 @@ public class KeyValueUtil {
 
   /*************** misc **********************************/
   /**
-   * n * @return <code>cell</code> if it is an object of class {@link KeyValue} else we will return
+   * @return <code>cell</code> if it is an object of class {@link KeyValue} else we will return a
-   * a new {@link KeyValue} instance made from <code>cell</code> Note: Even if the cell is an object
+   *         new {@link KeyValue} instance made from <code>cell</code> Note: Even if the cell is an
-   * of any of the subclass of {@link KeyValue}, we will create a new {@link KeyValue} object
+   *         object of any of the subclass of {@link KeyValue}, we will create a new
-   * wrapping same buffer. This API is used only with MR based tools which expect the type to be
+   *         {@link KeyValue} object wrapping same buffer. This API is used only with MR based tools
-   * exactly KeyValue. That is the reason for doing this way.
+   *         which expect the type to be exactly KeyValue. That is the reason for doing this way.
    * @deprecated without any replacement.
    */
   @Deprecated
@@ -444,8 +444,9 @@ public class KeyValueUtil {
   }
 
   /**
-   * Write out a KeyValue in the manner in which we used to when KeyValue was a Writable. nn
+   * Write out a KeyValue in the manner in which we used to when KeyValue was a Writable.
-   * * @return Length written on stream n * @see #create(DataInput) for the inverse function
+   * @return Length written on stream
+   * @see #create(DataInput) for the inverse function
    */
   public static long write(final KeyValue kv, final DataOutput out) throws IOException {
     // This is how the old Writables write used to serialize KVs. Need to figure
@@ -639,7 +640,7 @@ public class KeyValueUtil {
    * @param in       inputStream to read.
    * @param withTags whether the keyvalue should include tags are not
    * @return Created KeyValue OR if we find a length of zero, we will return null which can be
-   *         useful marking a stream as done. n
+   *         useful marking a stream as done.
    */
   public static KeyValue createKeyValueFromInputStream(InputStream in, boolean withTags)
     throws IOException {
@@ -663,24 +664,24 @@ public class KeyValueUtil {
   }
 
   /**
-   * n * @return A KeyValue made of a byte array that holds the key-only part. Needed to convert
+   * Returns a KeyValue made of a byte array that holds the key-only part. Needed to convert hfile
-   * hfile index members to KeyValues.
+   * index members to KeyValues.
    */
   public static KeyValue createKeyValueFromKey(final byte[] b) {
     return createKeyValueFromKey(b, 0, b.length);
   }
 
   /**
-   * n * @return A KeyValue made of a byte buffer that holds the key-only part. Needed to convert
+   * Return a KeyValue made of a byte buffer that holds the key-only part. Needed to convert hfile
-   * hfile index members to KeyValues.
+   * index members to KeyValues.
    */
   public static KeyValue createKeyValueFromKey(final ByteBuffer bb) {
     return createKeyValueFromKey(bb.array(), bb.arrayOffset(), bb.limit());
   }
 
   /**
-   * nnn * @return A KeyValue made of a byte array that holds the key-only part. Needed to convert
+   * Return a KeyValue made of a byte array that holds the key-only part. Needed to convert hfile
-   * hfile index members to KeyValues.
+   * index members to KeyValues.
    */
   public static KeyValue createKeyValueFromKey(final byte[] b, final int o, final int l) {
     byte[] newb = new byte[l + KeyValue.ROW_OFFSET];
@@ -691,19 +692,19 @@ public class KeyValueUtil {
   }
 
   /**
-   * n * Where to read bytes from. Creates a byte array to hold the KeyValue backing bytes copied
+   * Where to read bytes from. Creates a byte array to hold the KeyValue backing bytes copied from
-   * from the steam.
+   * the steam.
    * @return KeyValue created by deserializing from <code>in</code> OR if we find a length of zero,
-   *         we will return null which can be useful marking a stream as done. n
+   *         we will return null which can be useful marking a stream as done.
    */
   public static KeyValue create(final DataInput in) throws IOException {
     return create(in.readInt(), in);
   }
 
   /**
-   * Create a KeyValue reading <code>length</code> from <code>in</code> nn * @return Created
+   * Create a KeyValue reading <code>length</code> from <code>in</code>
-   * KeyValue OR if we find a length of zero, we will return null which can be useful marking a
+   * @return Created KeyValue OR if we find a length of zero, we will return null which can be
-   * stream as done. n
+   *         useful marking a stream as done.
    */
   public static KeyValue create(int length, final DataInput in) throws IOException {
 

hbase-common/src/main/java/org/apache/hadoop/hbase/PrivateCellUtil.java

@@ -1019,7 +1019,7 @@ public final class PrivateCellUtil {
    * Writes the row from the given cell to the output stream excluding the common prefix
    * @param out     The dataoutputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param rlength the row length n
+   * @param rlength the row length
    */
   public static void writeRowSkippingBytes(DataOutputStream out, Cell cell, short rlength,
     int commonPrefix) throws IOException {
@@ -1207,7 +1207,6 @@ public final class PrivateCellUtil {
 
   /**
    * Compares only the key portion of a cell. It does not include the sequence id/mvcc of the cell
-   * nn
    * @return an int greater than 0 if left > than right lesser than 0 if left < than right
    *         equal to 0 if left is equal to right
    */
@@ -2168,7 +2167,7 @@ public final class PrivateCellUtil {
   /**
    * Writes the Cell's key part as it would have serialized in a KeyValue. The format is <2 bytes
    * rk len><rk><1 byte cf len><cf><qualifier><8 bytes
-   * timestamp><1 byte type> nnn
+   * timestamp><1 byte type>
    */
   public static void writeFlatKey(Cell cell, DataOutput out) throws IOException {
     short rowLen = cell.getRowLength();
@@ -2200,7 +2199,7 @@ public final class PrivateCellUtil {
   /**
    * Deep clones the given cell if the cell supports deep cloning
    * @param cell the cell to be cloned
-   * @return the cloned cell n
+   * @return the cloned cell
    */
   public static Cell deepClone(Cell cell) throws CloneNotSupportedException {
     if (cell instanceof ExtendedCell) {
@@ -2214,7 +2213,7 @@ public final class PrivateCellUtil {
    * @param cell     the cell to be written
    * @param out      the outputstream
    * @param withTags if tags are to be written or not
-   * @return the total bytes written n
+   * @return the total bytes written
    */
   public static int writeCell(Cell cell, OutputStream out, boolean withTags) throws IOException {
     if (cell instanceof ExtendedCell) {
@@ -2289,8 +2288,8 @@ public final class PrivateCellUtil {
 
   /**
    * Sets the given seqId to the cell. Marked as audience Private as of 1.2.0. Setting a Cell
-   * sequenceid is an internal implementation detail not for general public use. nn * @throws
+   * sequenceid is an internal implementation detail not for general public use.
-   * IOException when the passed cell is not of type {@link ExtendedCell}
+   * @throws IOException when the passed cell is not of type {@link ExtendedCell}
    */
   public static void setSequenceId(Cell cell, long seqId) throws IOException {
     if (cell instanceof ExtendedCell) {
@@ -2302,8 +2301,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Sets the given timestamp to the cell. nn * @throws IOException when the passed cell is not of
+   * Sets the given timestamp to the cell.
-   * type {@link ExtendedCell}
+   * @throws IOException when the passed cell is not of type {@link ExtendedCell}
    */
   public static void setTimestamp(Cell cell, long ts) throws IOException {
     if (cell instanceof ExtendedCell) {
@@ -2359,7 +2358,7 @@ public final class PrivateCellUtil {
    * Writes the row from the given cell to the output stream
    * @param out     The outputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param rlength the row length n
+   * @param rlength the row length
    */
   public static void writeRow(OutputStream out, Cell cell, short rlength) throws IOException {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2374,7 +2373,7 @@ public final class PrivateCellUtil {
    * Writes the family from the given cell to the output stream
    * @param out     The outputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param flength the family length n
+   * @param flength the family length
    */
   public static void writeFamily(OutputStream out, Cell cell, byte flength) throws IOException {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2389,7 +2388,7 @@ public final class PrivateCellUtil {
    * Writes the qualifier from the given cell to the output stream
    * @param out     The outputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param qlength the qualifier length n
+   * @param qlength the qualifier length
    */
   public static void writeQualifier(OutputStream out, Cell cell, int qlength) throws IOException {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2405,7 +2404,7 @@ public final class PrivateCellUtil {
    * Writes the qualifier from the given cell to the output stream excluding the common prefix
    * @param out     The dataoutputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param qlength the qualifier length n
+   * @param qlength the qualifier length
    */
   public static void writeQualifierSkippingBytes(DataOutputStream out, Cell cell, int qlength,
     int commonPrefix) throws IOException {
@@ -2424,7 +2423,7 @@ public final class PrivateCellUtil {
    * Writes the value from the given cell to the output stream
    * @param out     The outputstream to which the data has to be written
    * @param cell    The cell whose contents has to be written
-   * @param vlength the value length n
+   * @param vlength the value length
    */
   public static void writeValue(OutputStream out, Cell cell, int vlength) throws IOException {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2439,7 +2438,7 @@ public final class PrivateCellUtil {
    * Writes the tag from the given cell to the output stream
    * @param out        The outputstream to which the data has to be written
    * @param cell       The cell whose contents has to be written
-   * @param tagsLength the tag length n
+   * @param tagsLength the tag length
    */
   public static void writeTags(OutputStream out, Cell cell, int tagsLength) throws IOException {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2472,7 +2471,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Converts the rowkey bytes of the given cell into an int value n * @return rowkey as int
+   * Converts the rowkey bytes of the given cell into an int value
+   * @return rowkey as int
    */
   public static int getRowAsInt(Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2483,7 +2483,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Converts the value bytes of the given cell into a long value n * @return value as long
+   * Converts the value bytes of the given cell into a long value
+   * @return value as long
    */
   public static long getValueAsLong(Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2494,7 +2495,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Converts the value bytes of the given cell into a int value n * @return value as int
+   * Converts the value bytes of the given cell into a int value
+   * @return value as int
    */
   public static int getValueAsInt(Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2505,7 +2507,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Converts the value bytes of the given cell into a double value n * @return value as double
+   * Converts the value bytes of the given cell into a double value
+   * @return value as double
    */
   public static double getValueAsDouble(Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2516,7 +2519,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Converts the value bytes of the given cell into a BigDecimal n * @return value as BigDecimal
+   * Converts the value bytes of the given cell into a BigDecimal
+   * @return value as BigDecimal
    */
   public static BigDecimal getValueAsBigDecimal(Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2737,8 +2741,9 @@ public final class PrivateCellUtil {
   /**
    * Estimate based on keyvalue's serialization format in the RPC layer. Note that there is an extra
    * SIZEOF_INT added to the size here that indicates the actual length of the cell for cases where
-   * cell's are serialized in a contiguous format (For eg in RPCs). n * @return Estimate of the
+   * cell's are serialized in a contiguous format (For eg in RPCs).
-   * <code>cell</code> size in bytes plus an extra SIZEOF_INT indicating the actual cell length.
+   * @return Estimate of the <code>cell</code> size in bytes plus an extra SIZEOF_INT indicating the
+   *         actual cell length.
    */
   public static int estimatedSerializedSizeOf(final Cell cell) {
     return cell.getSerializedSize() + Bytes.SIZEOF_INT;
@@ -2758,9 +2763,9 @@ public final class PrivateCellUtil {
   /**
    * This method exists just to encapsulate how we serialize keys. To be replaced by a factory that
    * we query to figure what the Cell implementation is and then, what serialization engine to use
-   * and further, how to serialize the key for inclusion in hfile index. TODO. n * @return The key
+   * and further, how to serialize the key for inclusion in hfile index. TODO.
-   * portion of the Cell serialized in the old-school KeyValue way or null if passed a null
+   * @return The key portion of the Cell serialized in the old-school KeyValue way or null if passed
-   * <code>cell</code>
+   *         a null <code>cell</code>
    */
   public static byte[] getCellKeySerializedAsKeyValueKey(final Cell cell) {
     if (cell == null) return null;
@@ -2770,8 +2775,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Create a Cell that is smaller than all other possible Cells for the given Cell's row. n
+   * Create a Cell that is smaller than all other possible Cells for the given Cell's row.
-   * * @return First possible Cell on passed Cell's row.
+   * @return First possible Cell on passed Cell's row.
    */
   public static Cell createFirstOnRow(final Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2835,8 +2840,8 @@ public final class PrivateCellUtil {
 
   /**
    * Create a Cell that is smaller than all other possible Cells for the given Cell's rk:cf and
-   * passed qualifier. nnnn * @return Last possible Cell on passed Cell's rk:cf and passed
+   * passed qualifier.
-   * qualifier.
+   * @return Last possible Cell on passed Cell's rk:cf and passed qualifier.
    */
   public static Cell createFirstOnRowCol(final Cell cell, byte[] qArray, int qoffest, int qlength) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2856,7 +2861,7 @@ public final class PrivateCellUtil {
    * Creates the first cell with the row/family/qualifier of this cell and the given timestamp. Uses
    * the "maximum" type that guarantees that the new cell is the lowest possible for this
    * combination of row, family, qualifier, and timestamp. This cell's own timestamp is ignored.
-   * @param cell - cell n
+   * @param cell - cell
    */
   public static Cell createFirstOnRowColTS(Cell cell, long ts) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2874,8 +2879,8 @@ public final class PrivateCellUtil {
   }
 
   /**
-   * Create a Cell that is larger than all other possible Cells for the given Cell's row. n
+   * Create a Cell that is larger than all other possible Cells for the given Cell's row.
-   * * @return Last possible Cell on passed Cell's row.
+   * @return Last possible Cell on passed Cell's row.
    */
   public static Cell createLastOnRow(final Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {
@@ -2892,7 +2897,8 @@ public final class PrivateCellUtil {
   /**
    * Create a Cell that is larger than all other possible Cells for the given Cell's rk:cf:q. Used
    * in creating "fake keys" for the multi-column Bloom filter optimization to skip the row/column
-   * we already know is not in the file. n * @return Last possible Cell on passed Cell's rk:cf:q.
+   * we already know is not in the file.
+   * @return Last possible Cell on passed Cell's rk:cf:q.
    */
   public static Cell createLastOnRowCol(final Cell cell) {
     if (cell instanceof ByteBufferExtendedCell) {

hbase-common/src/main/java/org/apache/hadoop/hbase/codec/BaseDecoder.java

@@ -95,7 +95,7 @@ public abstract class BaseDecoder implements Codec.Decoder {
   /**
    * Extract a Cell.
    * @return a parsed Cell or throws an Exception. EOFException or a generic IOException maybe
-   *         thrown if EOF is reached prematurely. Does not return null. n
+   *         thrown if EOF is reached prematurely. Does not return null.
    */
   @NonNull
   protected abstract Cell parseCell() throws IOException;

hbase-common/src/main/java/org/apache/hadoop/hbase/codec/CellCodec.java

@@ -62,7 +62,7 @@ public class CellCodec implements Codec {
     }
 
     /**
-     * Write int length followed by array bytes. nnnn
+     * Write int length followed by array bytes.
      */
     private void write(final byte[] bytes, final int offset, final int length) throws IOException {
       // TODO add BB backed os check and do for write. Pass Cell