HBASE-22725 Remove all remaining Javadoc warnings

Signed-off-by: stack <stack@apache.org>
Signed-off-by: Jan Hentschel <jan.hentschel@ultratendency.com>

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

@@ -432,9 +432,10 @@ class SimpleRequestController implements RequestController {
      * regions. 3) check the total concurrent tasks. 4) check the concurrent
      * tasks for server.
      *
-     * @param loc
+     * @param loc the destination of data
-     * @param heapSizeOfRow
+     * @param heapSizeOfRow the data size
-     * @return either Include {@link ReturnCode} or Skip {@link ReturnCode}
+     * @return either Include {@link RequestController.ReturnCode} or skip
+     *         {@link RequestController.ReturnCode}
      */
     @Override
     public ReturnCode canTakeOperation(HRegionLocation loc, long heapSizeOfRow) {

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

@@ -203,8 +203,8 @@ public interface Table extends Closeable {
    * @throws IOException if a remote or network exception occurs.
    * @since 0.90.0
    * @apiNote {@link #put(List)} runs pre-flight validations on the input list on client.
-   *   Currently {@link #get(List)} doesn't run any validations on the client-side, currently there
+   *          Currently {@link #get(List)} doesn't run any validations on the client-side,
-   *   is no need, but this may change in the future. An
+   *          currently there is no need, but this may change in the future. An
    *          {@link IllegalArgumentException} will be thrown in this case.
    */
   default Result[] get(List<Get> gets) throws IOException {
@@ -390,9 +390,9 @@ public interface Table extends Closeable {
    * @since 0.20.1
    * @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,
+   *          {@link #delete(List)} doesn't run validations on the client, there is no need
-   * but this may change in the future. An * {@link IllegalArgumentException} will be thrown
+   *          currently, but this may change in the future. An * {@link IllegalArgumentException}
-   * in this case.
+   *          will be thrown in this case.
    */
   default void delete(List<Delete> deletes) throws IOException {
     throw new NotImplementedException("Add an implementation!");

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

@@ -39,7 +39,7 @@ public abstract class Batch {
    * the implementations {@link Batch.Call#call(Object)} method will be invoked
    * with a proxy to each region's coprocessor {@link com.google.protobuf.Service} implementation.
    * </p>
-   * @see org.apache.hadoop.hbase.client.coprocessor
+   * @see org.apache.hadoop.hbase.client.coprocessor.Batch
    * @see org.apache.hadoop.hbase.client.Table#coprocessorService(byte[])
    * @see org.apache.hadoop.hbase.client.Table#coprocessorService(Class, byte[], byte[],
    * org.apache.hadoop.hbase.client.coprocessor.Batch.Call)

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/snapshot/ExportSnapshot.java

@@ -267,9 +267,10 @@ public class ExportSnapshot extends AbstractHBaseTool implements Tool {
       return new Path(outputArchive, path);
     }
 
+    @SuppressWarnings("checkstyle:linelength")
     /**
      * Used by TestExportSnapshot to test for retries when failures happen.
-     * Failure is injected in {@link #copyFile(Context, SnapshotFileInfo, Path)}.
+     * Failure is injected in {@link #copyFile(Mapper.Context, org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotFileInfo, Path)}.
      */
     private void injectTestFailure(final Context context, final SnapshotFileInfo inputInfo)
         throws IOException {

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -3959,7 +3959,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * a batch are stored with highest durability specified of for all operations in a batch,
    * except for {@link Durability#SKIP_WAL}.
    *
-   * <p>This function is called from {@link #batchReplay(MutationReplay[], long)} with
+   * <p>This function is called from {@link #batchReplay(WALSplitUtil.MutationReplay[], long)} with
    * {@link ReplayBatchOperation} instance and {@link #batchMutate(Mutation[], long, long)} with
    * {@link MutationBatchOperation} instance as an argument. As the processing of replay batch
    * and mutation batch is very similar, lot of code is shared by providing generic methods in
@@ -3970,7 +3970,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * @param batchOp contains the list of mutations
    * @return an array of OperationStatus which internally contains the
    *         OperationStatusCode and the exceptionMessage if any.
-   * @throws IOException
+   * @throws IOException if an IO problem is encountered
    */
   OperationStatus[] batchMutate(BatchOperation<?> batchOp) throws IOException {
     boolean initialized = false;

hbase-server/src/main/java/org/apache/hadoop/hbase/tool/LoadIncrementalHFiles.java

@@ -593,7 +593,8 @@ public class LoadIncrementalHFiles extends Configured implements Tool {
   }
 
   /**
-   * @param table the table to load into
+   * @param conn the HBase cluster connection
+   * @param tableName the table name of the table to load into
    * @param pool the ExecutorService
    * @param queue the queue for LoadQueueItem
    * @param startEndKeys start and end keys

hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java

@@ -1889,16 +1889,16 @@ public class HBaseTestingUtility extends HBaseZKTestingUtility {
   }
 
   /**
-   * @param tableName
+   * @param tableName the name of the table
-   * @param startKey
+   * @param startKey the start key of the region
-   * @param stopKey
+   * @param stopKey the stop key of the region
-   * @param callingMethod
+   * @param callingMethod the name of the calling method probably a test method
-   * @param conf
+   * @param conf the configuration to use
-   * @param isReadOnly
+   * @param isReadOnly {@code true} if the table is read only, {@code false} otherwise
-   * @param families
+   * @param families the column families to use
-   * @throws IOException
+   * @throws IOException if an IO problem is encountered
-   * @return A region on which you must call
+   * @return A region on which you must call {@link HBaseTestingUtility#closeRegionAndWAL(HRegion)}
-             {@link HBaseTestingUtility#closeRegionAndWAL(HRegion)} when done.
+   *         when done.
    * @deprecated since 2.0.0 and will be removed in 3.0.0. Use
    *   {@link #createLocalHRegion(TableName, byte[], byte[], boolean, Durability, WAL, byte[]...)}
    *   instead.
@@ -3139,10 +3139,9 @@ public class HBaseTestingUtility extends HBaseZKTestingUtility {
    * Waits for a table to be 'enabled'.  Enabled means that table is set as 'enabled' and the
    * regions have been all assigned.  Will timeout after default period (30 seconds)
    * Tolerates nonexistent table.
-   * @param table Table to wait on.
+   * @param table the table to wait on.
-   * @param table
+   * @throws InterruptedException if interrupted while waiting
-   * @throws InterruptedException
+   * @throws IOException if an IO problem is encountered
-   * @throws IOException
    */
   public void waitTableEnabled(TableName table)
       throws InterruptedException, IOException {

hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java

@@ -144,7 +144,7 @@ ClientProtos.ClientService.BlockingInterface, RegionServerServices {
 
   /**
    * Map of regions to map of rows and {@link Result}. Used as data source when
-   * {@link #get(RpcController, GetRequest)} is called. Because we have a byte
+   * {@link #get(RpcController, ClientProtos.GetRequest)} is called. Because we have a byte
    * key, need to use TreeMap and provide a Comparator.  Use
    * {@link #setGetResult(byte[], byte[], Result)} filling this map.
    */
@@ -195,10 +195,11 @@ ClientProtos.ClientService.BlockingInterface, RegionServerServices {
   }
 
   /**
-   * Use this method filling the backing data source used by {@link #get(RpcController, GetRequest)}
+   * Use this method filling the backing data source used by
-   * @param regionName
+   * {@link #get(RpcController, ClientProtos.GetRequest)}
-   * @param row
+   * @param regionName the region name to assign
-   * @param r
+   * @param row the row key
+   * @param r the single row result
    */
   void setGetResult(final byte [] regionName, final byte [] row, final Result r) {
     Map<byte [], Result> value = this.gets.get(regionName);

pom.xml

@@ -3541,6 +3541,15 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
+        <configuration>
+          <tags>
+            <tag>
+              <name>apiNote</name>
+              <placement>a</placement>
+              <head>API Note:</head>
+            </tag>
+          </tags>
+        </configuration>
         <reportSets>
           <!-- Dev API -->
           <reportSet>