[ 
https://issues.apache.org/jira/browse/HBASE-15295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15175174#comment-15175174
 ] 

Hadoop QA commented on HBASE-15295:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s 
{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m 
0s {color} | {color:green} Patch does not have any anti-patterns. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s 
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 
0s {color} | {color:green} The patch appears to include 19 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 
40s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 42s 
{color} | {color:green} master passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 41s 
{color} | {color:green} master passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 7m 
46s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m 
0s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 
12s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 22s 
{color} | {color:green} master passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 31s 
{color} | {color:green} master passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
49s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 41s 
{color} | {color:green} the patch passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 41s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 41s 
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 41s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 2m 24s 
{color} | {color:red} Patch generated 1 new checkstyle issues in hbase-client 
(total was 532, now 465). {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m 
2s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
34m 42s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 
48s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 8s 
{color} | {color:green} the patch passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 15s 
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 11s 
{color} | {color:green} hbase-client in the patch passed with JDK v1.8.0_72. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 19s 
{color} | {color:green} hbase-it in the patch passed with JDK v1.8.0_72. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 116m 36s 
{color} | {color:red} hbase-server in the patch failed with JDK v1.8.0_72. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 20s 
{color} | {color:green} hbase-client in the patch passed with JDK v1.7.0_95. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 25s 
{color} | {color:green} hbase-it in the patch passed with JDK v1.7.0_95. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 69m 6s {color} 
| {color:red} hbase-server in the patch failed with JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 1m 
45s {color} | {color:green} Patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 270m 21s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_72 Failed junit tests | 
hadoop.hbase.coprocessor.TestAggregateProtocol |
| JDK v1.8.0_72 Timed out junit tests | 
org.apache.hadoop.hbase.snapshot.TestSnapshotClientRetries |
|   | org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancer2 |
|   | org.apache.hadoop.hbase.master.TestAssignmentListener |
|   | org.apache.hadoop.hbase.master.cleaner.TestSnapshotFromMaster |
|   | 
org.apache.hadoop.hbase.master.normalizer.TestSimpleRegionNormalizerOnCluster |
|   | org.apache.hadoop.hbase.master.TestMasterRestartAfterDisablingTable |
|   | org.apache.hadoop.hbase.master.TestSplitLogManager |
|   | org.apache.hadoop.hbase.master.TestDistributedLogSplitting |
|   | org.apache.hadoop.hbase.master.snapshot.TestSnapshotFileCache |
|   | org.apache.hadoop.hbase.snapshot.TestRestoreFlushSnapshotFromClient |
|   | org.apache.hadoop.hbase.snapshot.TestFlushSnapshotFromClient |
|   | 
org.apache.hadoop.hbase.client.replication.TestReplicationAdminWithClusters |
|   | org.apache.hadoop.hbase.master.TestMasterOperationsForRegionReplicas |
| JDK v1.7.0_95 Timed out junit tests | 
org.apache.hadoop.hbase.master.procedure.TestCreateTableProcedure |
|   | org.apache.hadoop.hbase.master.procedure.TestModifyTableProcedure |
|   | org.apache.hadoop.hbase.master.procedure.TestServerCrashProcedure |
|   | org.apache.hadoop.hbase.regionserver.TestRowTooBig |
|   | org.apache.hadoop.hbase.regionserver.TestCorruptedRegionStoreFile |
|   | org.apache.hadoop.hbase.regionserver.TestSplitLogWorker |
|   | org.apache.hadoop.hbase.regionserver.compactions.TestFIFOCompactionPolicy 
|
|   | org.apache.hadoop.hbase.master.TestGetLastFlushedSequenceId |
|   | org.apache.hadoop.hbase.regionserver.TestCompaction |
|   | org.apache.hadoop.hbase.snapshot.TestSnapshotClientRetries |
|   | org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancer2 |
|   | org.apache.hadoop.hbase.master.TestMasterFailover |
|   | org.apache.hadoop.hbase.regionserver.TestRegionServerMetrics |
|   | org.apache.hadoop.hbase.master.TestGetInfoPort |
|   | org.apache.hadoop.hbase.master.TestAssignmentListener |
|   | org.apache.hadoop.hbase.master.TestMasterFailoverBalancerPersistence |
|   | org.apache.hadoop.hbase.master.cleaner.TestSnapshotFromMaster |
|   | org.apache.hadoop.hbase.regionserver.TestColumnSeeking |
|   | org.apache.hadoop.hbase.quotas.TestQuotaTableUtil |
|   | org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildHole |
|   | org.apache.hadoop.hbase.client.TestMetaWithReplicas |
|   | org.apache.hadoop.hbase.regionserver.wal.TestLogRollAbort |
|   | org.apache.hadoop.hbase.regionserver.TestCompactSplitThread |
|   | org.apache.hadoop.hbase.util.TestHBaseFsckEncryption |
|   | org.apache.hadoop.hbase.ipc.TestRpcClientLeaks |
|   | org.apache.hadoop.hbase.master.TestMasterMetrics |
|   | org.apache.hadoop.hbase.master.TestTableStateManager |
|   | org.apache.hadoop.hbase.master.TestTableLockManager |
|   | org.apache.hadoop.hbase.master.procedure.TestMasterFailoverWithProcedures 
|
|   | org.apache.hadoop.hbase.master.TestMasterRestartAfterDisablingTable |
|   | org.apache.hadoop.hbase.master.TestSplitLogManager |
|   | org.apache.hadoop.hbase.master.procedure.TestWALProcedureStoreOnHDFS |
|   | org.apache.hadoop.hbase.master.TestRollingRestart |
|   | org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancer |
|   | org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildOverlap |
|   | org.apache.hadoop.hbase.regionserver.TestSplitWalDataLoss |
|   | org.apache.hadoop.hbase.master.TestDistributedLogSplitting |
|   | org.apache.hadoop.hbase.util.TestCoprocessorScanPolicy |
|   | org.apache.hadoop.hbase.util.TestMiniClusterLoadEncoded |
|   | org.apache.hadoop.hbase.io.encoding.TestDataBlockEncoders |
|   | org.apache.hadoop.hbase.master.TestDeadServer |
|   | org.apache.hadoop.hbase.util.TestMiniClusterLoadSequential |
|   | org.apache.hadoop.hbase.regionserver.TestRegionServerReportForDuty |
|   | org.apache.hadoop.hbase.master.TestMasterShutdown |
|   | org.apache.hadoop.hbase.util.TestFanOutOneBlockAsyncDFSOutput |
|   | org.apache.hadoop.hbase.regionserver.wal.TestLogRolling |
|   | 
org.apache.hadoop.hbase.regionserver.throttle.TestCompactionWithThroughputController
 |
|   | org.apache.hadoop.hbase.regionserver.TestPerColumnFamilyFlush |
|   | org.apache.hadoop.hbase.io.hfile.TestScannerSelectionUsingTTL |
|   | org.apache.hadoop.hbase.regionserver.TestJoinedScanners |
|   | 
org.apache.hadoop.hbase.regionserver.throttle.TestFlushWithThroughputController 
|
|   | org.apache.hadoop.hbase.master.TestMaster |
|   | org.apache.hadoop.hbase.mob.TestExpiredMobFileCleaner |
|   | org.apache.hadoop.hbase.security.access.TestNamespaceCommands |
|   | org.apache.hadoop.hbase.TestAcidGuarantees |
|   | org.apache.hadoop.hbase.regionserver.TestCompactionWithCoprocessor |
|   | org.apache.hadoop.hbase.io.hfile.TestSeekBeforeWithInlineBlocks |
|   | org.apache.hadoop.hbase.regionserver.TestHRegionOnCluster |
|   | org.apache.hadoop.hbase.regionserver.TestCompoundBloomFilter |
|   | org.apache.hadoop.hbase.io.hfile.TestHFileBlockIndex |
|   | org.apache.hadoop.hbase.io.hfile.TestForceCacheImportantBlocks |
|   | org.apache.hadoop.hbase.regionserver.TestRecoveredEdits |
|   | org.apache.hadoop.hbase.util.TestRegionSplitter |
|   | org.apache.hadoop.hbase.master.snapshot.TestSnapshotFileCache |
|   | org.apache.hadoop.hbase.master.TestMasterNoCluster |
|   | org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildBase |
|   | org.apache.hadoop.hbase.util.TestMergeTool |
|   | org.apache.hadoop.hbase.util.TestRegionMover |
|   | org.apache.hadoop.hbase.util.TestMergeTable |
|   | org.apache.hadoop.hbase.TestHBaseOnOtherDfsCluster |
|   | org.apache.hadoop.hbase.master.TestRestartCluster |
|   | org.apache.hadoop.hbase.util.TestMiniClusterLoadParallel |
|   | org.apache.hadoop.hbase.regionserver.TestRSKilledWhenInitializing |
|   | org.apache.hadoop.hbase.regionserver.TestHRegion |
|   | org.apache.hadoop.hbase.regionserver.TestDefaultMemStore |
|   | org.apache.hadoop.hbase.io.encoding.TestLoadAndSwitchEncodeOnDisk |
|   | org.apache.hadoop.hbase.io.hfile.TestCacheOnWrite |
|   | org.apache.hadoop.hbase.regionserver.TestMultiColumnScanner |
|   | org.apache.hadoop.hbase.master.TestMasterFileSystem |
|   | org.apache.hadoop.hbase.util.TestHBaseFsckMOB |
|   | org.apache.hadoop.hbase.regionserver.TestFSErrorsExposed |
|   | org.apache.hadoop.hbase.regionserver.TestClusterId |
|   | org.apache.hadoop.hbase.regionserver.TestRegionServerHostname |
|   | org.apache.hadoop.hbase.client.TestTableSnapshotScanner |
|   | 
org.apache.hadoop.hbase.replication.regionserver.TestReplicationWALReaderManager
 |
|   | org.apache.hadoop.hbase.regionserver.TestHRegionReplayEvents |
|   | org.apache.hadoop.hbase.master.handler.TestCreateTableHandler |
|   | org.apache.hadoop.hbase.master.handler.TestEnableTableHandler |
|   | org.apache.hadoop.hbase.util.TestConnectionCache |
|   | org.apache.hadoop.hbase.regionserver.TestRegionReplicaFailover |
|   | org.apache.hadoop.hbase.io.hfile.TestHFileBlock |
|   | org.apache.hadoop.hbase.replication.TestMultiSlaveReplication |
|   | org.apache.hadoop.hbase.regionserver.TestStore |
|   | org.apache.hadoop.hbase.client.TestIncrementsFromClientSide |
|   | org.apache.hadoop.hbase.master.procedure.TestModifyColumnFamilyProcedure |
|   | org.apache.hadoop.hbase.master.procedure.TestDeleteColumnFamilyProcedure |
|   | org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad |
|   | org.apache.hadoop.hbase.mapreduce.TestTableSnapshotInputFormat |
|   | org.apache.hadoop.hbase.filter.TestFuzzyRowFilterEndToEnd |
|   | org.apache.hadoop.hbase.replication.TestMasterReplication |
|   | org.apache.hadoop.hbase.regionserver.TestAtomicOperation |
|   | org.apache.hadoop.hbase.master.TestMasterOperationsForRegionReplicas |
|   | org.apache.hadoop.hbase.master.procedure.TestDeleteNamespaceProcedure |
|   | org.apache.hadoop.hbase.io.TestFileLink |
|   | org.apache.hadoop.hbase.util.TestFSUtils |
|   | org.apache.hadoop.hbase.regionserver.TestMajorCompaction |
|   | org.apache.hadoop.hbase.io.encoding.TestBufferedDataBlockEncoder |
|   | org.apache.hadoop.hbase.mapreduce.TestLoadIncrementalHFilesSplitRecovery |
|   | org.apache.hadoop.hbase.master.procedure.TestTruncateTableProcedure |
|   | org.apache.hadoop.hbase.util.TestHBaseFsckTwoRS |
|   | org.apache.hadoop.hbase.io.encoding.TestEncodedSeekers |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.9.1 Server=1.9.1 Image:yetus/hbase:date2016-03-02 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12790841/hbase-15295_v5.patch |
| JIRA Issue | HBASE-15295 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux 51f5fcc1718a 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build@2/component/dev-support/hbase-personality.sh
 |
| git revision | master / bab8d15 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/artifact/patchprocess/diff-checkstyle-hbase-client.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/artifact/patchprocess/patch-unit-hbase-server-jdk1.8.0_72.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/artifact/patchprocess/patch-unit-hbase-server-jdk1.7.0_95.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/789/artifact/patchprocess/patch-unit-hbase-server-jdk1.8.0_72.txt
 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/artifact/patchprocess/patch-unit-hbase-server-jdk1.7.0_95.txt
 |
| JDK v1.7.0_95  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/testReport/ |
| modules | C: hbase-client hbase-it hbase-server U: . |
| Max memory used | 189MB |
| Powered by | Apache Yetus 0.1.0   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/789/console |


This message was automatically generated.



> MutateTableAccess.multiMutate() does not get high priority causing a deadlock
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-15295
>                 URL: https://issues.apache.org/jira/browse/HBASE-15295
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.3.0, 1.2.1, 1.1.4
>
>         Attachments: hbase-15295_v1.patch, hbase-15295_v1.patch, 
> hbase-15295_v2.patch, hbase-15295_v3.patch, hbase-15295_v4.patch, 
> hbase-15295_v5.patch
>
>
> We have seen this in a cluster with Phoenix secondary indexes leading to a 
> deadlock. All handlers are busy waiting on the index updates to finish:
> {code}
> "B.defaultRpcServer.handler=50,queue=0,port=16020" #91 daemon prio=5 
> os_prio=0 tid=0x00007f29f64ba000 nid=0xab51 waiting on condition 
> [0x00007f29a8762000]
>    java.lang.Thread.State: WAITING (parking)
>       at sun.misc.Unsafe.park(Native Method)
>       - parking to wait for  <0x0000000124f1d5c8> (a 
> com.google.common.util.concurrent.AbstractFuture$Sync)
>       at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
>       at 
> com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:275)
>       at 
> com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:111)
>       at 
> org.apache.phoenix.hbase.index.parallel.BaseTaskRunner.submit(BaseTaskRunner.java:66)
>       at 
> org.apache.phoenix.hbase.index.parallel.BaseTaskRunner.submitUninterruptible(BaseTaskRunner.java:99)
>       at 
> org.apache.phoenix.hbase.index.write.ParallelWriterIndexCommitter.write(ParallelWriterIndexCommitter.java:194)
>       at 
> org.apache.phoenix.hbase.index.write.IndexWriter.write(IndexWriter.java:179)
>       at 
> org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:144)
>       at 
> org.apache.phoenix.hbase.index.write.IndexWriter.writeAndKillYourselfOnFailure(IndexWriter.java:134)
>       at 
> org.apache.phoenix.hbase.index.Indexer.doPostWithExceptions(Indexer.java:457)
>       at org.apache.phoenix.hbase.index.Indexer.doPost(Indexer.java:406)
>       at 
> org.apache.phoenix.hbase.index.Indexer.postBatchMutate(Indexer.java:401)
>       at 
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$36.call(RegionCoprocessorHost.java:1006)
>       at 
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1673)
>       at 
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1748)
>       at 
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1705)
>       at 
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postBatchMutate(RegionCoprocessorHost.java:1002)
>       at 
> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3162)
>       at 
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2801)
>       at 
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2743)
>       at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp(RSRpcServices.java:692)
>       at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:654)
>       at 
> org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2031)
>       at 
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32213)
>       at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2114)
>       at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:101)
>       at 
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
>       at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
>       at java.lang.Thread.run(Thread.java:745)
> {code}
> And the index region is trying to split, and is trying to do a meta update: 
> {code}
> "regionserver/<hostaname>/10.132.70.191:16020-splits-1454693389669" #1779 
> prio=5 os_prio=0 tid=0x00007f29e149c000 nid=0x5107 in Object.wait() 
> [0x00007f1f136d6000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         at 
> org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1215)
>         - locked <0x000000010b72bc20> (a org.apache.hadoop.hbase.ipc.Call)
>         at 
> org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:213)
>         at 
> org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:287)
>         at 
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.execService(ClientProtos.java:32675)
>         at 
> org.apache.hadoop.hbase.protobuf.ProtobufUtil.execService(ProtobufUtil.java:1618)
>         at 
> org.apache.hadoop.hbase.ipc.RegionCoprocessorRpcChannel$1.call(RegionCoprocessorRpcChannel.java:92)
>         at 
> org.apache.hadoop.hbase.ipc.RegionCoprocessorRpcChannel$1.call(RegionCoprocessorRpcChannel.java:89)
>         at 
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:126)
>         at 
> org.apache.hadoop.hbase.ipc.RegionCoprocessorRpcChannel.callExecService(RegionCoprocessorRpcChannel.java:95)
>         at 
> org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel.callBlockingMethod(CoprocessorRpcChannel.java:73)
>         at 
> org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos$MultiRowMutationService$BlockingStub.mutateRows(MultiRowMutationProtos.java:2149)
>         at 
> org.apache.hadoop.hbase.MetaTableAccessor.multiMutate(MetaTableAccessor.java:1339)
>         at 
> org.apache.hadoop.hbase.MetaTableAccessor.splitRegion(MetaTableAccessor.java:1309)
>         at 
> org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.createDaughters(SplitTransactionImpl.java:296)
>         at 
> org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.execute(SplitTransactionImpl.java:509)
>         at 
> org.apache.hadoop.hbase.regionserver.SplitRequest.run(SplitRequest.java:85)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> {code}
> The issue is that the RPC to the meta is using a coprocessor endpoint, thus 
> does not get a high priority from AnnotationReadingPriorityFunction. Because 
> of this, a deadlock happens because all handlers are already busy waiting on 
> the index updates.  



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