After update we still can't recover HBase cluster. Our region servers ABORTING over and over:
prod003: Sep 09 02:51:27 prod003 hbase[1440]: 2018-09-09 02:51:27,395 FATAL [RpcServer.default.FPBQ.Fifo.handler=92,queue=2,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536446665703: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:51:27 prod003 hbase[1440]: 2018-09-09 02:51:27,395 FATAL [RpcServer.default.FPBQ.Fifo.handler=77,queue=7,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536446665703: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:52:19 prod003 hbase[1440]: 2018-09-09 02:52:19,224 FATAL [RpcServer.default.FPBQ.Fifo.handler=82,queue=2,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536446665703: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:52:28 prod003 hbase[1440]: 2018-09-09 02:52:28,922 FATAL [RpcServer.default.FPBQ.Fifo.handler=94,queue=4,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536446665703: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:55:02 prod003 hbase[957]: 2018-09-09 02:55:02,096 FATAL [RpcServer.default.FPBQ.Fifo.handler=95,queue=5,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536450772841: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:55:18 prod003 hbase[957]: 2018-09-09 02:55:18,793 FATAL [RpcServer.default.FPBQ.Fifo.handler=97,queue=7,port=60020] regionserver.HRegionServer: ABORTING region server prod003,60020,1536450772841: Could not update the index table, killing server region because couldn't write to an index table prod004: Sep 09 02:52:13 prod004 hbase[4890]: 2018-09-09 02:52:13,541 FATAL [RpcServer.default.FPBQ.Fifo.handler=83,queue=3,port=60020] regionserver.HRegionServer: ABORTING region server prod004,60020,1536446387325: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:52:50 prod004 hbase[4890]: 2018-09-09 02:52:50,264 FATAL [RpcServer.default.FPBQ.Fifo.handler=75,queue=5,port=60020] regionserver.HRegionServer: ABORTING region server prod004,60020,1536446387325: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:53:40 prod004 hbase[4890]: 2018-09-09 02:53:40,709 FATAL [RpcServer.default.FPBQ.Fifo.handler=66,queue=6,port=60020] regionserver.HRegionServer: ABORTING region server prod004,60020,1536446387325: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:54:00 prod004 hbase[4890]: 2018-09-09 02:54:00,060 FATAL [RpcServer.default.FPBQ.Fifo.handler=89,queue=9,port=60020] regionserver.HRegionServer: ABORTING region server prod004,60020,1536446387325: Could not update the index table, killing server region because couldn't write to an index table prod005: Sep 09 02:52:50 prod005 hbase[3772]: 2018-09-09 02:52:50,661 FATAL [RpcServer.default.FPBQ.Fifo.handler=65,queue=5,port=60020] regionserver.HRegionServer: ABORTING region server prod005,60020,1536446400009: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:53:27 prod005 hbase[3772]: 2018-09-09 02:53:27,542 FATAL [RpcServer.default.FPBQ.Fifo.handler=90,queue=0,port=60020] regionserver.HRegionServer: ABORTING region server prod005,60020,1536446400009: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:54:00 prod005 hbase[3772]: 2018-09-09 02:53:59,915 FATAL [RpcServer.default.FPBQ.Fifo.handler=7,queue=7,port=60020] regionserver.HRegionServer: ABORTING region server prod005,60020,1536446400009: Could not update the index table, killing server region because couldn't write to an index table Sep 09 02:54:30 prod005 hbase[3772]: 2018-09-09 02:54:30,058 FATAL [RpcServer.default.FPBQ.Fifo.handler=16,queue=6,port=60020] regionserver.HRegionServer: ABORTING region server prod005,60020,1536446400009: Could not update the index table, killing server region because couldn't write to an index table And so on... Trace is the same everywhere: Sep 09 02:54:30 prod005 hbase[3772]: org.apache.phoenix.hbase.index.exception.MultiIndexWriteFailureException: disableIndexOnFailure=true, Failed to write to multiple index tables: [KM_IDX1, KM_IDX2, KM_HISTORY_IDX1, KM_HISTORY_IDX2, KM_HISTORY_IDX3] Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.write.TrackingParallelWriterIndexCommitter.write(TrackingParallelWriterIndexCommitter.java:235) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.write.IndexWriter.write(IndexWriter.java:195) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:156) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:145) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.Indexer.doPostWithExceptions(Indexer.java:620) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.Indexer.doPost(Indexer.java:595) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.hbase.index.Indexer.postBatchMutateIndispensably(Indexer.java:578) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$37.call(RegionCoprocessorHost.java:1048) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1711) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1789) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1745) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postBatchMutateIndispensably(RegionCoprocessorHost.java:1044) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3646) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:3108) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:3050) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.commitBatch(UngroupedAggregateRegionObserver.java:271) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.commitBatchWithRetries(UngroupedAggregateRegionObserver.java:241) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.rebuildIndices(UngroupedAggregateRegionObserver.java:1068) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.doPostScannerOpen(UngroupedAggregateRegionObserver.java:386) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.BaseScannerRegionObserver$RegionScannerHolder.overrideDelegate(BaseScannerRegionObserver.java:239) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.phoenix.coprocessor.BaseScannerRegionObserver$RegionScannerHolder.nextRaw(BaseScannerRegionObserver.java:287) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2843) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3080) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:36613) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2354) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:124) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:297) Sep 09 02:54:30 prod005 hbase[3772]: at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:277) > On 9 Sep 2018, at 01:44, Batyrshin Alexander <0x62...@gmail.com> wrote: > > Thank you. > We're updating our cluster right now... > > >> On 9 Sep 2018, at 01:39, Ted Yu <yuzhih...@gmail.com >> <mailto:yuzhih...@gmail.com>> wrote: >> >> It seems you should deploy hbase with the following fix: >> >> HBASE-21069 NPE in StoreScanner.updateReaders causes RS to crash >> >> 1.4.7 was recently released. >> >> FYI >> >> On Sat, Sep 8, 2018 at 3:32 PM Batyrshin Alexander <0x62...@gmail.com >> <mailto:0x62...@gmail.com>> wrote: >> Hello, >> >> We got this exception from prod006 server >> >> Sep 09 00:38:02 prod006 hbase[18907]: 2018-09-09 00:38:02,532 FATAL >> [MemStoreFlusher.1] regionserver.HRegionServer: ABORTING region server >> prod006,60020,1536235102833: Replay of WAL required. Forcing server shutdown >> Sep 09 00:38:02 prod006 hbase[18907]: >> org.apache.hadoop.hbase.DroppedSnapshotException: region: >> KM,c\xEF\xBF\xBD\x16I7\xEF\xBF\xBD\x0A"A\xEF\xBF\xBDd\xEF\xBF\xBD\xEF\xBF\xBD\x19\x07t,1536178245576.60c121ba50e67f2429b9ca2ba2a11bad. >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2645) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2322) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2284) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:2170) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.flush(HRegion.java:2095) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:508) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:478) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$900(MemStoreFlusher.java:76) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:264) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> java.lang.Thread.run(Thread.java:748) >> Sep 09 00:38:02 prod006 hbase[18907]: Caused by: >> java.lang.NullPointerException >> Sep 09 00:38:02 prod006 hbase[18907]: at >> java.util.ArrayList.<init>(ArrayList.java:178) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.StoreScanner.updateReaders(StoreScanner.java:863) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:1172) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HStore.updateStorefiles(HStore.java:1145) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HStore.access$900(HStore.java:122) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.commit(HStore.java:2505) >> Sep 09 00:38:02 prod006 hbase[18907]: at >> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2600) >> Sep 09 00:38:02 prod006 hbase[18907]: ... 9 more >> Sep 09 00:38:02 prod006 hbase[18907]: 2018-09-09 00:38:02,532 FATAL >> [MemStoreFlusher.1] regionserver.HRegionServer: RegionServer abort: loaded >> coprocessors are: >> [org.apache.hadoop.hbase.regionserver.IndexHalfStoreFileReaderGenerator, >> org.apache.phoenix.coprocessor.SequenceRegionObserver, org.apache.phoenix.c >> >> After that we got ABORTING on almost every Region Servers in cluster with >> different reasons: >> >> prod003 >> Sep 09 01:12:11 prod003 hbase[11552]: 2018-09-09 01:12:11,799 FATAL >> [PostOpenDeployTasks:88bfac1dfd807c4cd1e9c1f31b4f053f] >> regionserver.HRegionServer: ABORTING region server >> prod003,60020,1536444066291: Exception running postOpenDeployTasks; >> region=88bfac1dfd807c4cd1e9c1f31b4f053f >> Sep 09 01:12:11 prod003 hbase[11552]: java.io.InterruptedIOException: #139, >> interrupted. currentNumberOfTask=8 >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.AsyncProcess.waitForMaximumCurrentTasks(AsyncProcess.java:1853) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.AsyncProcess.waitForMaximumCurrentTasks(AsyncProcess.java:1823) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.AsyncProcess.waitForAllPreviousOpsAndReset(AsyncProcess.java:1899) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:250) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:213) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1484) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.client.HTable.put(HTable.java:1031) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.MetaTableAccessor.put(MetaTableAccessor.java:1033) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.MetaTableAccessor.putToMetaTable(MetaTableAccessor.java:1023) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.MetaTableAccessor.updateLocation(MetaTableAccessor.java:1433) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.MetaTableAccessor.updateRegionLocation(MetaTableAccessor.java:1400) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:2041) >> Sep 09 01:12:11 prod003 hbase[11552]: at >> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler$PostOpenDeployTasksThread.run(OpenRegionHandler.java:329) >> >> prod002 >> Sep 09 01:12:30 prod002 hbase[29056]: 2018-09-09 01:12:30,144 FATAL >> [RpcServer.default.FPBQ.Fifo.handler=36,queue=6,port=60020] >> regionserver.HRegionServer: ABORTING region server >> prod002,60020,1536235138673: Could not update the index table, killing >> server region because couldn't write to an index table >> Sep 09 01:12:30 prod002 hbase[29056]: >> org.apache.phoenix.hbase.index.exception.MultiIndexWriteFailureException: >> disableIndexOnFailure=true, Failed to write to multiple index tables: >> [KM_IDX1, KM_IDX2, KM_HISTORY1, KM_HISTORY2, >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.write.TrackingParallelWriterIndexCommitter.write(TrackingParallelWriterIndexCommitter.java:235) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.write.IndexWriter.write(IndexWriter.java:195) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:156) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:145) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.Indexer.doPostWithExceptions(Indexer.java:620) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.Indexer.doPost(Indexer.java:595) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.hbase.index.Indexer.postBatchMutateIndispensably(Indexer.java:578) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$37.call(RegionCoprocessorHost.java:1048) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1711) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1789) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1745) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postBatchMutateIndispensably(RegionCoprocessorHost.java:1044) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3646) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:3108) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:3050) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.commitBatch(UngroupedAggregateRegionObserver.java:271) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.access$000(UngroupedAggregateRegionObserver.java:164) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver$1.doMutation(UngroupedAggregateRegionObserver.java:246) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.index.PhoenixIndexFailurePolicy.doBatchWithRetries(PhoenixIndexFailurePolicy.java:455) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.handleIndexWriteException(UngroupedAggregateRegionObserver.java:929) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.commitBatchWithRetries(UngroupedAggregateRegionObserver.java:243) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.rebuildIndices(UngroupedAggregateRegionObserver.java:1077) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.doPostScannerOpen(UngroupedAggregateRegionObserver.java:386) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.BaseScannerRegionObserver$RegionScannerHolder.overrideDelegate(BaseScannerRegionObserver.java:239) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.phoenix.coprocessor.BaseScannerRegionObserver$RegionScannerHolder.nextRaw(BaseScannerRegionObserver.java:287) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2843) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3080) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:36613) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2354) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:124) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:297) >> Sep 09 01:12:30 prod002 hbase[29056]: at >> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:277) >> >> >> And etc... >> >> Master-status web interface shows that contact lost from this aborted >> servers. >
