HBASE-12526 Remove unused imports (Varun Saxena)

2014-11-29 09:20:46 -08:00 · 2014-11-29 09:20:46 -08:00 · 555e78005d
parent 58b6b24c29
commit 555e78005d
142 changed files with 0 additions and 212 deletions
--- a/hbase-annotations/src/main/java/org/apache/hadoop/hbase/classification/InterfaceStability.java
+++ b/hbase-annotations/src/main/java/org/apache/hadoop/hbase/classification/InterfaceStability.java
@ -21,9 +21,6 @@ import java.lang.annotation.Documented;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;

-import org.apache.hadoop.hbase.classification.InterfaceAudience.LimitedPrivate;
-import org.apache.hadoop.hbase.classification.InterfaceAudience.Private;
-import org.apache.hadoop.hbase.classification.InterfaceAudience.Public;

 /**
 * Annotation to inform users of how much to rely on a particular package,
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
@ -31,13 +31,11 @@ import org.apache.hadoop.hbase.ClusterStatus;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.MasterNotRunningException;
 import org.apache.hadoop.hbase.NamespaceDescriptor;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableExistsException;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.TableNotFoundException;
-import org.apache.hadoop.hbase.UnknownRegionException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClusterStatusListener.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClusterStatusListener.java
@ -42,7 +42,6 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
-import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionFactory.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionFactory.java
@ -24,7 +24,6 @@ import java.util.concurrent.ExecutorService;

 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseConfiguration;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.security.User;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
@ -23,7 +23,6 @@ import java.util.concurrent.ExecutorService;

 import org.apache.commons.logging.Log;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.ZooKeeperConnectionException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.security.User;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/NoServerForRegionException.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/NoServerForRegionException.java
@ -18,7 +18,6 @@
 */
 package org.apache.hadoop.hbase.client;

-import org.apache.hadoop.hbase.RegionException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;

--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RetryingCallerInterceptorFactory.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RetryingCallerInterceptorFactory.java
@ -25,7 +25,6 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.client.ConnectionManager.HConnectionImplementation;

 /**
 * Factory implementation to provide the {@link HConnectionImplementation} with
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ReversedScannerCallable.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ReversedScannerCallable.java
@ -34,7 +34,6 @@ import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
 import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
 import org.apache.hadoop.hbase.util.Bytes;

-import com.google.protobuf.RpcController;

 /**
 * A reversed ScannerCallable which supports backward scanning.
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java
@ -50,7 +50,6 @@ import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
 import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.net.DNS;

-import com.google.protobuf.RpcController;
 import com.google.protobuf.ServiceException;
 import com.google.protobuf.TextFormat;

--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/replication/ReplicationAdmin.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/replication/ReplicationAdmin.java
@ -50,7 +50,6 @@ import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;
 import org.apache.hadoop.hbase.replication.ReplicationPeers;
 import org.apache.hadoop.hbase.replication.ReplicationQueuesClient;
 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
-import org.apache.zookeeper.KeeperException;

 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.Lists;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/coprocessor/ColumnInterpreter.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/coprocessor/ColumnInterpreter.java
@ -23,7 +23,6 @@ import java.io.IOException;

 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.client.coprocessor.LongColumnInterpreter;

 import com.google.protobuf.Message;

--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/QualifierFilter.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/QualifierFilter.java
@ -25,7 +25,6 @@ import java.util.ArrayList;
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RowFilter.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RowFilter.java
@ -25,7 +25,6 @@ import java.util.ArrayList;
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueFilter.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/filter/SingleColumnValueFilter.java
@ -28,7 +28,6 @@ import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/CoprocessorRpcChannel.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/CoprocessorRpcChannel.java
@ -32,7 +32,6 @@ import com.google.protobuf.Message;
 import com.google.protobuf.RpcCallback;
 import com.google.protobuf.RpcChannel;
 import com.google.protobuf.RpcController;
-import com.google.protobuf.Service;
 import com.google.protobuf.ServiceException;

 /**
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/RemoteWithExtrasException.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/RemoteWithExtrasException.java
@ -17,7 +17,6 @@
 */
 package org.apache.hadoop.hbase.ipc;

-import org.apache.hadoop.hbase.DoNotRetryIOException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.ipc.RemoteException;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcController.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcController.java
@ -23,11 +23,8 @@ import java.io.IOException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.util.StringUtils;

-import com.google.protobuf.Descriptors;
-import com.google.protobuf.Message;
 import com.google.protobuf.RpcCallback;
 import com.google.protobuf.RpcController;
-import com.google.protobuf.Service;

 /**
 * Used for server-side protobuf RPC service invocations.  This handler allows
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationPeers.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationPeers.java
@ -18,7 +18,6 @@
 */
 package org.apache.hadoop.hbase.replication;

-import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/util/PoolMap.java
@ -22,7 +22,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/codec/Codec.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/codec/Codec.java
@ -24,7 +24,6 @@ import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.io.CellOutputStream;
-import org.apache.hadoop.hbase.io.encoding.DataBlockEncoder;

 /**
 * Encoder/Decoder for Cell.
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/io/CellOutputStream.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/io/CellOutputStream.java
@ -21,7 +21,6 @@ package org.apache.hadoop.hbase.io;
 import java.io.IOException;

 import org.apache.hadoop.hbase.Cell;
-import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;

--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/types/DataType.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/types/DataType.java
@ -21,7 +21,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.util.Order;
 import org.apache.hadoop.hbase.util.PositionedByteRange;
-import org.apache.hadoop.io.Writable;

 /**
 * <p>
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawBytesFixedLength.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawBytesFixedLength.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.types;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Order;
 import org.apache.hadoop.hbase.util.PositionedByteRange;

--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawBytesTerminated.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawBytesTerminated.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.types;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Order;
 import org.apache.hadoop.hbase.util.PositionedByteRange;

--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawStringFixedLength.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawStringFixedLength.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.types;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Order;

 /**
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawStringTerminated.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/types/RawStringTerminated.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.types;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Order;

 /**
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/AbstractPositionedByteRange.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/AbstractPositionedByteRange.java
@ -17,7 +17,6 @@
 */
 package org.apache.hadoop.hbase.util;

-import java.nio.ByteBuffer;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ByteBufferUtils.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ByteBufferUtils.java
@ -17,7 +17,6 @@
 package org.apache.hadoop.hbase.util;

 import java.io.ByteArrayOutputStream;
-import java.io.DataInput;
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.io.InputStream;
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ConcurrentIndex.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/ConcurrentIndex.java
@ -21,7 +21,6 @@ package org.apache.hadoop.hbase.util;


 import java.util.Comparator;
-import java.util.ConcurrentModificationException;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
@ -31,7 +30,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;

 import com.google.common.base.Supplier;
-import com.google.common.collect.Multiset;

 /**
 * A simple concurrent map of sets. This is similar in concept to
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/OrderedBytes.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/OrderedBytes.java
@ -25,7 +25,6 @@ import java.math.BigInteger;
 import java.math.MathContext;
 import java.math.RoundingMode;
 import java.nio.charset.Charset;
-import java.util.Comparator;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/util/PositionedByteRange.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/util/PositionedByteRange.java
@ -18,7 +18,6 @@

 package org.apache.hadoop.hbase.util;

-import java.nio.ByteBuffer;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
--- a/hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.java
+++ b/hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.java
@ -32,7 +32,6 @@ import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.coprocessor.BaseRegionObserver;
 import org.apache.hadoop.hbase.coprocessor.ObserverContext;
 import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
-import org.apache.hadoop.hbase.coprocessor.RegionObserver;
 import org.apache.hadoop.hbase.regionserver.HStore;
 import org.apache.hadoop.hbase.regionserver.Store;
 import org.apache.hadoop.hbase.regionserver.ScanInfo;
@ -43,7 +42,6 @@ import org.apache.hadoop.hbase.regionserver.Store;
 import org.apache.hadoop.hbase.regionserver.StoreScanner;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
-import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
 import org.apache.zookeeper.KeeperException;
 import org.apache.zookeeper.WatchedEvent;
 import org.apache.zookeeper.Watcher;
--- a/hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/PrefixTreeCodec.java
+++ b/hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/PrefixTreeCodec.java
@ -25,7 +25,6 @@ import java.nio.ByteBuffer;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.Cell;
-import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.KeyValue.KVComparator;
 import org.apache.hadoop.hbase.KeyValue.MetaComparator;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
@ -18,7 +18,6 @@
 package org.apache.hadoop.hbase;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/example/HFileArchiveManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/example/HFileArchiveManager.java
@ -25,7 +25,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ZooKeeperConnectionException;
 import org.apache.hadoop.hbase.client.HConnection;
-import org.apache.hadoop.hbase.master.cleaner.HFileCleaner;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/example/LongTermArchivingHFileCleaner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/example/LongTermArchivingHFileCleaner.java
@ -28,7 +28,6 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.master.cleaner.BaseHFileCleanerDelegate;
-import org.apache.hadoop.hbase.master.cleaner.TimeToLiveHFileCleaner;
 import org.apache.hadoop.hbase.util.FSUtils;
 import org.apache.zookeeper.KeeperException;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/ClientSideRegionScanner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/ClientSideRegionScanner.java
@ -30,7 +30,6 @@ import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.KeyValueUtil;
 import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
 import org.apache.hadoop.hbase.regionserver.HRegion;
 import org.apache.hadoop.hbase.regionserver.RegionScanner;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/CoprocessorHConnection.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/CoprocessorHConnection.java
@ -28,7 +28,6 @@ import org.apache.hadoop.hbase.client.ConnectionManager.HConnectionImplementatio
 import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
 import org.apache.hadoop.hbase.regionserver.HRegionServer;
 import org.apache.hadoop.hbase.regionserver.RegionServerServices;
-import org.apache.hadoop.hbase.security.User;
 import org.apache.hadoop.hbase.security.UserProvider;

 /**
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/TableSnapshotScanner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/TableSnapshotScanner.java
@ -34,10 +34,8 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.mapreduce.TableSnapshotInputFormat;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
 import org.apache.hadoop.hbase.protobuf.generated.SnapshotProtos.SnapshotRegionManifest;
-import org.apache.hadoop.hbase.snapshot.ExportSnapshot;
 import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;
 import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
 import org.apache.hadoop.hbase.snapshot.SnapshotManifest;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/constraint/Constraint.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/constraint/Constraint.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.constraint;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configurable;
-import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.client.Put;

 /**
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/constraint/ConstraintException.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/constraint/ConstraintException.java
@ -18,8 +18,6 @@
 package org.apache.hadoop.hbase.constraint;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.DoNotRetryIOException;
-import org.apache.hadoop.hbase.client.Put;

 /**
 * Exception that a user defined constraint throws on failure of a {@link Put}.
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/SplitLogManagerCoordination.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/SplitLogManagerCoordination.java
@ -27,7 +27,6 @@ import java.util.concurrent.ConcurrentMap;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.master.MasterFileSystem;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.SplitLogManager.ResubmitDirective;
 import org.apache.hadoop.hbase.master.SplitLogManager.Task;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/SplitLogWorkerCoordination.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/SplitLogWorkerCoordination.java
@ -29,7 +29,6 @@ import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.RegionStoreSeq
 import org.apache.hadoop.hbase.regionserver.RegionServerServices;
 import org.apache.hadoop.hbase.regionserver.SplitLogWorker;
 import org.apache.hadoop.hbase.regionserver.SplitLogWorker.TaskExecutor;
-import org.apache.hadoop.hbase.regionserver.handler.WALSplitterHandler;

 import com.google.common.annotations.VisibleForTesting;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/ZKSplitLogManagerCoordination.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/ZKSplitLogManagerCoordination.java
@ -43,17 +43,14 @@ import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.SplitLogCounters;
 import org.apache.hadoop.hbase.SplitLogTask;
-import org.apache.hadoop.hbase.Stoppable;
 import org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.TaskFinisher.Status;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.io.hfile.HFile;
 import org.apache.hadoop.hbase.master.MasterServices;
-import org.apache.hadoop.hbase.master.SplitLogManager;
 import org.apache.hadoop.hbase.master.SplitLogManager.ResubmitDirective;
 import org.apache.hadoop.hbase.master.SplitLogManager.Task;
 import org.apache.hadoop.hbase.master.SplitLogManager.TerminationStatus;
 import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.SplitLogTask.RecoveryMode;
-import org.apache.hadoop.hbase.regionserver.SplitLogWorker;
 import org.apache.hadoop.hbase.wal.DefaultWALProvider;
 import org.apache.hadoop.hbase.wal.WALSplitter;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/ZkSplitLogWorkerCoordination.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coordination/ZkSplitLogWorkerCoordination.java
@ -39,7 +39,6 @@ import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.SplitLogCounters;
 import org.apache.hadoop.hbase.SplitLogTask;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
-import org.apache.hadoop.hbase.master.SplitLogManager;
 import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.RegionStoreSequenceIds;
 import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.SplitLogTask.RecoveryMode;
 import org.apache.hadoop.hbase.regionserver.HRegion;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
@ -48,7 +48,6 @@ import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.HTableInterface;
 import org.apache.hadoop.hbase.client.HTableWrapper;
-import org.apache.hadoop.hbase.client.Table;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.CoprocessorClassLoader;
 import org.apache.hadoop.hbase.util.SortedCopyOnWriteSet;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
@ -27,7 +27,6 @@ import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.Coprocessor;
 import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.client.Append;
 import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.Durability;
@ -48,12 +47,10 @@ import org.apache.hadoop.hbase.regionserver.HRegion.Operation;
 import org.apache.hadoop.hbase.regionserver.InternalScanner;
 import org.apache.hadoop.hbase.regionserver.KeyValueScanner;
 import org.apache.hadoop.hbase.regionserver.MiniBatchOperationInProgress;
-import org.apache.hadoop.hbase.regionserver.OperationStatus;
 import org.apache.hadoop.hbase.regionserver.RegionScanner;
 import org.apache.hadoop.hbase.regionserver.ScanType;
 import org.apache.hadoop.hbase.regionserver.Store;
 import org.apache.hadoop.hbase.regionserver.StoreFile;
-import org.apache.hadoop.hbase.regionserver.StoreFileScanner;
 import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;
 import org.apache.hadoop.hbase.regionserver.wal.HLogKey;
 import org.apache.hadoop.hbase.wal.WALKey;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/errorhandling/ForeignExceptionSnare.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/errorhandling/ForeignExceptionSnare.java
@ -18,7 +18,6 @@
 package org.apache.hadoop.hbase.errorhandling;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.classification.InterfaceStability;

 /**
 * This is an interface for a cooperative exception throwing mechanism.  Implementations are
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
@ -41,12 +41,10 @@ import org.apache.hadoop.hbase.io.encoding.HFileBlockDecodingContext;
 import org.apache.hadoop.hbase.io.encoding.HFileBlockDefaultDecodingContext;
 import org.apache.hadoop.hbase.io.encoding.HFileBlockDefaultEncodingContext;
 import org.apache.hadoop.hbase.io.encoding.HFileBlockEncodingContext;
-import org.apache.hadoop.hbase.io.hfile.bucket.BucketCache;
 import org.apache.hadoop.hbase.util.ByteBufferUtils;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.ChecksumType;
 import org.apache.hadoop.hbase.util.ClassSize;
-import org.apache.hadoop.hbase.util.CompoundBloomFilter;
 import org.apache.hadoop.io.IOUtils;

 import com.google.common.base.Preconditions;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.java
@ -46,7 +46,6 @@ import org.apache.hadoop.hbase.io.hfile.HFile.CachingBlockReader;
 import org.apache.hadoop.hbase.util.ByteBufferUtils;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.ClassSize;
-import org.apache.hadoop.hbase.util.CompoundBloomFilterWriter;
 import org.apache.hadoop.io.WritableUtils;
 import org.apache.hadoop.util.StringUtils;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
@ -21,7 +21,6 @@ import java.io.IOException;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.Cell;
-import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.io.encoding.DataBlockEncoder;
 import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
 import org.apache.hadoop.hbase.io.encoding.HFileBlockDecodingContext;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileScanner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileScanner.java
@ -23,7 +23,6 @@ import java.nio.ByteBuffer;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.Cell;
-import org.apache.hadoop.hbase.KeyValue;

 /**
 * A scanner allows you to position yourself within a HFile and
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
@ -39,7 +39,6 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.io.HeapSize;
 import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
 import org.apache.hadoop.hbase.io.hfile.bucket.BucketCache;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
@ -60,7 +60,6 @@ import org.apache.hadoop.hbase.io.hfile.Cacheable;
 import org.apache.hadoop.hbase.io.hfile.CacheableDeserializer;
 import org.apache.hadoop.hbase.io.hfile.CacheableDeserializerIdManager;
 import org.apache.hadoop.hbase.io.hfile.CachedBlock;
-import org.apache.hadoop.hbase.io.hfile.CombinedBlockCache;
 import org.apache.hadoop.hbase.io.hfile.HFileBlock;
 import org.apache.hadoop.hbase.util.ConcurrentIndex;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.java
@ -19,7 +19,6 @@ package org.apache.hadoop.hbase.ipc;

 import java.util.ArrayList;
 import java.util.List;
-import java.util.Random;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/RowCounter.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/RowCounter.java
@ -32,7 +32,6 @@ import org.apache.hadoop.mapred.JobClient;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.Reporter;
-import org.apache.hadoop.mapred.lib.IdentityReducer;
 import org.apache.hadoop.util.Tool;
 import org.apache.hadoop.util.ToolRunner;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableInputFormatBase.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableInputFormatBase.java
@ -29,7 +29,6 @@ import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.filter.Filter;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
-import org.apache.hadoop.hbase.regionserver.HRegion;
 import org.apache.hadoop.mapred.InputFormat;
 import org.apache.hadoop.mapred.InputSplit;
 import org.apache.hadoop.mapred.JobConf;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReader.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReader.java
@ -22,7 +22,6 @@ import java.io.IOException;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.Table;
 import org.apache.hadoop.hbase.filter.Filter;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReaderImpl.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReaderImpl.java
@ -25,7 +25,6 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/CellCounter.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/CellCounter.java
@ -39,7 +39,6 @@ import org.apache.hadoop.hbase.filter.PrefixFilter;
 import org.apache.hadoop.hbase.filter.RegexStringComparator;
 import org.apache.hadoop.hbase.filter.RowFilter;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
-import org.apache.hadoop.hbase.io.TimeRange;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.io.IntWritable;
 import org.apache.hadoop.io.Text;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/HLogInputFormat.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/HLogInputFormat.java
@ -23,7 +23,6 @@ import java.util.List;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.wal.WAL;
 import org.apache.hadoop.hbase.regionserver.wal.HLogKey;
 import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
 import org.apache.hadoop.mapreduce.InputFormat;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/IdentityTableReducer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/IdentityTableReducer.java
@ -26,7 +26,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.client.Mutation;
 import org.apache.hadoop.io.Writable;
-import org.apache.hadoop.mapreduce.OutputFormat;

 /**
 * Convenience class that simply writes all values (which must be
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.java
@ -32,7 +32,6 @@ import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
-import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.RegionLocator;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.Scan;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableOutputFormat.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableOutputFormat.java
@ -32,7 +32,6 @@ import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
 import org.apache.hadoop.hbase.client.Delete;
-import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Mutation;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.client.Table;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.java
@ -26,7 +26,6 @@ import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormat.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormat.java
@ -31,11 +31,8 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.client.Result;
-import org.apache.hadoop.hbase.client.Scan;
-import org.apache.hadoop.hbase.client.TableSnapshotScanner;
 import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
-import org.apache.hadoop.hbase.snapshot.ExportSnapshot;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.mapreduce.InputFormat;
 import org.apache.hadoop.mapreduce.InputSplit;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentListener.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentListener.java
@ -17,7 +17,6 @@
 */
 package org.apache.hadoop.hbase.master;

-import java.io.IOException;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterStatusPublisher.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterStatusPublisher.java
@ -56,7 +56,6 @@ import org.apache.hadoop.hbase.util.VersionInfo;

 import java.io.Closeable;
 import java.io.IOException;
-import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
@ -127,7 +127,6 @@ import org.apache.hadoop.hbase.zookeeper.ZKClusterId;
 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
 import org.apache.zookeeper.KeeperException;
-import org.apache.zookeeper.Watcher;
 import org.mortbay.jetty.Connector;
 import org.mortbay.jetty.nio.SelectChannelConnector;
 import org.mortbay.jetty.servlet.Context;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterStatusServlet.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterStatusServlet.java
@ -30,7 +30,6 @@ import javax.servlet.http.HttpServletResponse;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.client.HBaseAdmin;
 import org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl;
 import org.apache.hadoop.hbase.util.FSUtils;
 import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerListener.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerListener.java
@ -17,7 +17,6 @@
 */
 package org.apache.hadoop.hbase.master;

-import java.io.IOException;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.ServerName;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
@ -44,11 +44,9 @@ import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.ServerLoad;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.YouAreDeadException;
-import org.apache.hadoop.hbase.ZooKeeperConnectionException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.client.ClusterConnection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
-import org.apache.hadoop.hbase.client.RetriesExhaustedException;
 import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer;
 import org.apache.hadoop.hbase.master.handler.MetaServerShutdownHandler;
 import org.apache.hadoop.hbase.master.handler.ServerShutdownHandler;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/SplitLogManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/SplitLogManager.java
@ -58,7 +58,6 @@ import org.apache.hadoop.hbase.coordination.SplitLogManagerCoordination.SplitLog
 import org.apache.hadoop.hbase.monitoring.MonitoredTask;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
 import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.SplitLogTask.RecoveryMode;
-import org.apache.hadoop.hbase.regionserver.SplitLogWorker;
 import org.apache.hadoop.hbase.wal.DefaultWALProvider;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.FSUtils;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/TableStateManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/TableStateManager.java
@ -26,7 +26,6 @@ import com.google.common.collect.Sets;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.TableDescriptor;
 import org.apache.hadoop.hbase.TableDescriptors;
 import org.apache.hadoop.hbase.TableName;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BalancerChore.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BalancerChore.java
@ -22,7 +22,6 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.Chore;
-import org.apache.hadoop.hbase.HBaseIOException;
 import org.apache.hadoop.hbase.master.HMaster;

 import java.io.IOException;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.java
@ -45,7 +45,6 @@ import org.apache.hadoop.hbase.RegionLoad;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.RegionReplicaUtil;
-import org.apache.hadoop.hbase.master.AssignmentManager;
 import org.apache.hadoop.hbase.master.LoadBalancer;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.RackManager;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredNodeLoadBalancer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredNodeLoadBalancer.java
@ -33,7 +33,6 @@ import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.NamespaceDescriptor;
 import org.apache.hadoop.hbase.ServerLoad;
 import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.master.LoadBalancer;
 import org.apache.hadoop.hbase.master.RackManager;
 import org.apache.hadoop.hbase.master.RegionPlan;
 import org.apache.hadoop.hbase.master.ServerManager;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/SimpleLoadBalancer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/SimpleLoadBalancer.java
@ -33,7 +33,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.master.AssignmentManager;
 import org.apache.hadoop.hbase.master.RegionPlan;

 import com.google.common.collect.MinMaxPriorityQueue;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
@ -30,7 +30,6 @@ import java.util.Random;

 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.commons.math.stat.descriptive.DescriptiveStatistics;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ClusterStatus;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/DeleteTableHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/DeleteTableHandler.java
@ -28,7 +28,6 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.CoordinatedStateException;
-import org.apache.hadoop.hbase.TableDescriptor;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/LogReplayHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/LogReplayHandler.java
@ -28,7 +28,6 @@ import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.executor.EventHandler;
 import org.apache.hadoop.hbase.executor.EventType;
 import org.apache.hadoop.hbase.master.DeadServer;
-import org.apache.hadoop.hbase.master.MasterFileSystem;
 import org.apache.hadoop.hbase.master.MasterServices;

 /**
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableAddFamilyHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableAddFamilyHandler.java
@ -26,7 +26,6 @@ import org.apache.hadoop.hbase.TableDescriptor;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.InvalidFamilyOperationException;
 import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.executor.EventType;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableEventHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableEventHandler.java
@ -37,7 +37,6 @@ import org.apache.hadoop.hbase.MetaTableAccessor;
 import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableDescriptor;
-import org.apache.hadoop.hbase.TableExistsException;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.TableNotDisabledException;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableModifyFamilyHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TableModifyFamilyHandler.java
@ -22,7 +22,6 @@ import java.io.IOException;
 import java.util.List;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.TableDescriptor;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HRegionInfo;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TotesHRegionInfo.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TotesHRegionInfo.java
@ -18,7 +18,6 @@
 */
 package org.apache.hadoop.hbase.master.handler;

-import java.beans.EventHandler;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TruncateTableHandler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/TruncateTableHandler.java
@ -28,7 +28,6 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.CoordinatedStateException;
 import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.TableDescriptor;
 import org.apache.hadoop.hbase.TableName;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.java
@ -31,7 +31,6 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.client.RegionReplicaUtil;
 import org.apache.hadoop.hbase.MetaTableAccessor;
 import org.apache.hadoop.hbase.master.MasterServices;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/MasterProcedureManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/MasterProcedureManager.java
@ -24,10 +24,6 @@ import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.Stoppable;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.MetricsMaster;
-import org.apache.hadoop.hbase.master.HMaster;
-import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
-import org.apache.hadoop.hbase.regionserver.HRegionServer;
-import org.apache.hadoop.hbase.regionserver.snapshot.RegionServerSnapshotManager;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ProcedureDescription;
 import org.apache.zookeeper.KeeperException;

--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/MasterProcedureManagerHost.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/MasterProcedureManagerHost.java
@ -21,7 +21,6 @@ import java.io.IOException;
 import java.util.Hashtable;

 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.master.HMaster;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.MetricsMaster;
 import org.apache.zookeeper.KeeperException;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/ProcedureMemberRpcs.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/ProcedureMemberRpcs.java
@ -21,7 +21,6 @@ import java.io.Closeable;
 import java.io.IOException;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.errorhandling.ForeignException;

 /**
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/RegionServerProcedureManagerHost.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/RegionServerProcedureManagerHost.java
@ -23,7 +23,6 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.procedure.flush.RegionServerFlushTableProcedureManager;
-import org.apache.hadoop.hbase.regionserver.HRegionServer;
 import org.apache.hadoop.hbase.regionserver.RegionServerServices;
 import org.apache.hadoop.hbase.regionserver.snapshot.RegionServerSnapshotManager;
 import org.apache.zookeeper.KeeperException;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/ZKProcedureCoordinatorRpcs.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/ZKProcedureCoordinatorRpcs.java
@ -25,7 +25,6 @@ import java.util.List;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.errorhandling.ForeignException;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/FlushTableSubprocedure.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/FlushTableSubprocedure.java
@ -23,7 +23,6 @@ import java.util.concurrent.Callable;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.errorhandling.ForeignException;
 import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;
 import org.apache.hadoop.hbase.procedure.ProcedureMember;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/DefaultOperationQuota.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/DefaultOperationQuota.java
@ -18,9 +18,7 @@

 package org.apache.hadoop.hbase.quotas;

-import java.io.IOException;
 import java.util.Arrays;
-import java.util.ArrayList;
 import java.util.List;

 import org.apache.commons.logging.Log;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/NoopOperationQuota.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/NoopOperationQuota.java
@ -20,8 +20,6 @@ package org.apache.hadoop.hbase.quotas;

 import java.util.List;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.client.Mutation;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/OperationQuota.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/OperationQuota.java
@ -20,8 +20,6 @@ package org.apache.hadoop.hbase.quotas;

 import java.util.List;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.client.Mutation;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaLimiterFactory.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaLimiterFactory.java
@ -18,11 +18,8 @@

 package org.apache.hadoop.hbase.quotas;

-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.quotas.OperationQuota.OperationType;
 import org.apache.hadoop.hbase.protobuf.generated.QuotaProtos.Throttle;

@InterfaceAudience.Private
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/RegionServerQuotaManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/RegionServerQuotaManager.java
@ -25,7 +25,6 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.ipc.RpcScheduler;
 import org.apache.hadoop.hbase.ipc.RequestContext;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/TimeBasedLimiter.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/TimeBasedLimiter.java
@ -18,7 +18,6 @@

 package org.apache.hadoop.hbase.quotas;

-import java.util.concurrent.TimeUnit;

 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MiniBatchOperationInProgress.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MiniBatchOperationInProgress.java
@ -18,8 +18,6 @@
 package org.apache.hadoop.hbase.regionserver;

 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.coprocessor.ObserverContext;
-import org.apache.hadoop.hbase.coprocessor.RegionObserver;
 import org.apache.hadoop.hbase.regionserver.wal.WALEdit;

 /**
--- a/Show More
+++ b/Show More