HBASE-22231 Removed unused and '*' imports

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

@@ -27,7 +27,6 @@
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.locks.Condition;
 import java.util.concurrent.locks.Lock;

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

@@ -18,11 +18,10 @@
  */
 package org.apache.hadoop.hbase.client;
 
-import org.apache.yetus.audience.InterfaceAudience;
-import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor;
-import org.apache.hadoop.hbase.client.TableDescriptorBuilder.ModifyableTableDescriptor;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HTableDescriptor;
+import org.apache.hadoop.hbase.client.TableDescriptorBuilder.ModifyableTableDescriptor;
+import org.apache.yetus.audience.InterfaceAudience;
 
 /**
  * Read-only table descriptor.

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

@@ -30,7 +30,6 @@
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hbase.exceptions.UnknownProtocolException;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
-import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;
 import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
 import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceCall;
 import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceRequest;

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

@@ -19,16 +19,13 @@
 
 import java.net.InetSocketAddress;
 import java.util.HashMap;
-import java.util.Iterator;
-import java.util.LinkedList;
 import java.util.Map;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
-import org.apache.hadoop.hbase.util.Pair;
 
 /**
  * A class to manage a list of servers that failed recently.

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

@@ -25,10 +25,9 @@
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.DoNotRetryIOException;
 import org.apache.hadoop.hbase.HBaseConfiguration;
-import org.apache.yetus.audience.InterfaceAudience;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.util.DynamicClassLoader;
 import org.apache.hadoop.ipc.RemoteException;
+import org.apache.yetus.audience.InterfaceAudience;
 
 /**
  * A {@link RemoteException} with some extra information.  If source exception

hbase-client/src/main/java/org/apache/hadoop/hbase/quotas/QuotaRetriever.java

@@ -26,7 +26,6 @@
 import java.util.Queue;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -36,7 +35,6 @@
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.client.Table;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.QuotaProtos.Quotas;
 import org.apache.hadoop.util.StringUtils;
 
 /**

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

@@ -29,7 +29,6 @@
 
 import org.apache.commons.crypto.cipher.CryptoCipherFactory;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.apache.yetus.audience.InterfaceStability;

hbase-client/src/main/java/org/apache/hadoop/hbase/snapshot/ClientSnapshotDescriptionUtils.java

@@ -21,7 +21,6 @@
 
 import org.apache.hadoop.hbase.TableName;
 import org.apache.yetus.audience.InterfaceAudience;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;
 import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos;
 import org.apache.hadoop.hbase.util.Bytes;
 

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

@@ -19,7 +19,6 @@
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
-import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.RegionLocations;
 import org.apache.hadoop.hbase.ServerName;

hbase-client/src/test/java/org/apache/hadoop/hbase/filter/TestComparators.java

@@ -23,7 +23,6 @@
 import java.nio.ByteBuffer;
 import org.apache.hadoop.hbase.ByteBufferKeyValue;
 import org.apache.hadoop.hbase.Cell;
-import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.PrivateCellUtil;

hbase-common/src/test/java/org/apache/hadoop/hbase/HBaseClassTestRuleChecker.java

@@ -22,7 +22,6 @@
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
-import java.util.concurrent.TimeUnit;
 
 import org.apache.hadoop.hbase.testclassification.IntegrationTests;
 import org.apache.yetus.audience.InterfaceAudience;

hbase-common/src/test/java/org/apache/hadoop/hbase/TestTimeout.java

@@ -18,7 +18,6 @@
 package org.apache.hadoop.hbase;
 
 import org.apache.hadoop.hbase.testclassification.SmallTests;
-import org.apache.hadoop.hbase.util.Threads;
 import org.junit.ClassRule;
 import org.junit.Ignore;
 import org.junit.Test;

hbase-common/src/test/java/org/apache/hadoop/hbase/net/TestAddress.java

@@ -17,11 +17,9 @@
  */
 package org.apache.hadoop.hbase.net;
 
-
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.MiscTests;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
-import org.junit.Assert;
 import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;

hbase-it/src/test/java/org/apache/hadoop/hbase/IntegrationTestRegionReplicaPerf.java

@@ -18,9 +18,21 @@
  */
 package org.apache.hadoop.hbase;
 
-import org.apache.hbase.thirdparty.com.google.common.base.MoreObjects;
-import org.apache.hbase.thirdparty.com.google.common.collect.Sets;
+import static java.lang.String.format;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
 import com.codahale.metrics.Histogram;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Queue;
+import java.util.Set;
+import java.util.concurrent.Callable;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.chaos.actions.MoveRandomRegionOfTableAction;
 import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsExceptMetaAction;
@@ -31,7 +43,6 @@
 import org.apache.hadoop.hbase.ipc.RpcClient;
 import org.apache.hadoop.hbase.regionserver.DisabledRegionSplitPolicy;
 import org.apache.hadoop.hbase.testclassification.IntegrationTests;
-import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.YammerHistogramUtils;
 import org.apache.hadoop.mapreduce.Counters;
 import org.apache.hadoop.mapreduce.Job;
@@ -40,16 +51,10 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import org.apache.hbase.thirdparty.com.google.common.base.MoreObjects;
+import org.apache.hbase.thirdparty.com.google.common.collect.Sets;
 import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine;
 
-import java.util.*;
-import java.util.concurrent.Callable;
-
-import static java.lang.String.format;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-
 /**
  * Test for comparing the performance impact of region replicas. Uses
  * components of {@link PerformanceEvaluation}. Does not run from

hbase-it/src/test/java/org/apache/hadoop/hbase/chaos/factories/MobNoKillMonkeyFactory.java

@@ -17,7 +17,24 @@
  */
 package org.apache.hadoop.hbase.chaos.factories;
 
-import org.apache.hadoop.hbase.chaos.actions.*;
+import org.apache.hadoop.hbase.chaos.actions.Action;
+import org.apache.hadoop.hbase.chaos.actions.AddColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeBloomFilterAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeCompressionAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeEncodingAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeVersionsAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactMobAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactTableAction;
+import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MergeRandomAdjacentRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.RemoveColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.SnapshotTableAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitRandomRegionOfTableAction;
 import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
 import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy;

hbase-it/src/test/java/org/apache/hadoop/hbase/chaos/factories/MobSlowDeterministicMonkeyFactory.java

@@ -15,10 +15,31 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.apache.hadoop.hbase.chaos.factories;
 
-import org.apache.hadoop.hbase.chaos.actions.*;
+import org.apache.hadoop.hbase.chaos.actions.Action;
+import org.apache.hadoop.hbase.chaos.actions.AddColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.BatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeBloomFilterAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeCompressionAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeEncodingAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeVersionsAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactMobAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactTableAction;
+import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MergeRandomAdjacentRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.RemoveColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartActiveMasterAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRsHoldingMetaAction;
+import org.apache.hadoop.hbase.chaos.actions.RollingBatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.SnapshotTableAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitRandomRegionOfTableAction;
 import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
 import org.apache.hadoop.hbase.chaos.policies.CompositeSequentialPolicy;

hbase-it/src/test/java/org/apache/hadoop/hbase/chaos/factories/SlowDeterministicMonkeyFactory.java

@@ -15,18 +15,40 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.apache.hadoop.hbase.chaos.factories;
 
-import org.apache.hadoop.hbase.chaos.actions.*;
+import org.apache.hadoop.hbase.chaos.actions.Action;
+import org.apache.hadoop.hbase.chaos.actions.AddColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.BatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeBloomFilterAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeCompressionAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeEncodingAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeSplitPolicyAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeVersionsAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactTableAction;
+import org.apache.hadoop.hbase.chaos.actions.DecreaseMaxHFileSizeAction;
+import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MergeRandomAdjacentRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.RemoveColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartActiveMasterAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRsHoldingMetaAction;
+import org.apache.hadoop.hbase.chaos.actions.RollingBatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.SnapshotTableAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitAllRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitRandomRegionOfTableAction;
 import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
 import org.apache.hadoop.hbase.chaos.policies.CompositeSequentialPolicy;
 import org.apache.hadoop.hbase.chaos.policies.DoActionsOncePolicy;
 import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy;
 
 public class SlowDeterministicMonkeyFactory extends MonkeyFactory {
-
   private long action1Period;
   private long action2Period;
   private long action3Period;
@@ -47,7 +69,6 @@ public class SlowDeterministicMonkeyFactory extends MonkeyFactory {
 
   @Override
   public ChaosMonkey build() {
-
     loadProperties();
     // Actions such as compact/flush a table/region,
     // move one region around. They are not so destructive,

hbase-it/src/test/java/org/apache/hadoop/hbase/chaos/factories/StressAssignmentManagerMonkeyFactory.java

@@ -17,7 +17,25 @@
  */
 package org.apache.hadoop.hbase.chaos.factories;
 
-import org.apache.hadoop.hbase.chaos.actions.*;
+import org.apache.hadoop.hbase.chaos.actions.Action;
+import org.apache.hadoop.hbase.chaos.actions.AddColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.BatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.ChangeSplitPolicyAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.CompactTableAction;
+import org.apache.hadoop.hbase.chaos.actions.DecreaseMaxHFileSizeAction;
+import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.FlushTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MergeRandomAdjacentRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRandomRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.MoveRegionsOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.RemoveColumnAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsAction;
+import org.apache.hadoop.hbase.chaos.actions.RestartRsHoldingMetaAction;
+import org.apache.hadoop.hbase.chaos.actions.RollingBatchRestartRsAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitAllRegionOfTableAction;
+import org.apache.hadoop.hbase.chaos.actions.SplitRandomRegionOfTableAction;
 import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
 import org.apache.hadoop.hbase.chaos.policies.CompositeSequentialPolicy;
@@ -27,7 +45,6 @@
 public class StressAssignmentManagerMonkeyFactory extends MonkeyFactory {
   @Override
   public ChaosMonkey build() {
-
     // Actions that could slow down region movement.
     // These could also get regions stuck if there are issues.
     Action[] actions1 = new Action[]{

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapred/TableSnapshotInputFormat.java

@@ -32,7 +32,6 @@
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.RecordReader;
 import org.apache.hadoop.mapred.Reporter;
-import org.apache.hadoop.mapreduce.Job;
 
 import java.io.DataInput;
 import java.io.DataOutput;

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/CellCounter.java

@@ -33,7 +33,6 @@
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.Scan;
-import org.apache.hadoop.hbase.filter.CompareFilter;
 import org.apache.hadoop.hbase.filter.Filter;
 import org.apache.hadoop.hbase.filter.PrefixFilter;
 import org.apache.hadoop.hbase.filter.RegexStringComparator;

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/ExportUtils.java

@@ -31,7 +31,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hbase.client.Scan;
-import org.apache.hadoop.hbase.filter.CompareFilter;
 import org.apache.hadoop.hbase.filter.Filter;
 import org.apache.hadoop.hbase.filter.IncompatibleFilterException;
 import org.apache.hadoop.hbase.filter.PrefixFilter;

hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.java

@@ -26,7 +26,6 @@
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 import org.apache.yetus.audience.InterfaceAudience;
 import org.slf4j.Logger;

hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableInputFormat.java

@@ -31,17 +31,20 @@
 import java.util.Arrays;
 import java.util.Map;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.*;
 import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.CompareOperator;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HBaseConfiguration;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.NotServingRegionException;
+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.Put;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.client.Table;
-import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
 import org.apache.hadoop.hbase.filter.Filter;
 import org.apache.hadoop.hbase.filter.RegexStringComparator;
 import org.apache.hadoop.hbase.filter.RowFilter;