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https://issues.apache.org/jira/browse/HBASE-14555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14944570#comment-14944570
]
Hudson commented on HBASE-14555:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #6876 (See
[https://builds.apache.org/job/HBase-TRUNK/6876/])
HBASE-14555 Fix Deadlock in MVCC branch-1.2 toString() (eclark: rev
39042b6a07e3e206b36f3f8ca69ea4a5b2faa4e4)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MultiVersionConcurrencyControl.java
> Deadlock in MVCC branch-1.2 toString()
> --------------------------------------
>
> Key: HBASE-14555
> URL: https://issues.apache.org/jira/browse/HBASE-14555
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0, 1.2.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Priority: Critical
> Fix For: 2.0.0, 1.2.0
>
> Attachments: HBASE-14555-v1.patch, HBASE-14555.patch
>
>
> Just saw this in an IT test.
> {code}
> Thread 75 (PriorityRpcServer.handler=3,queue=1,port=16020):
> State: BLOCKED
> Blocked count: 691635
> Waited count: 1557446
> Blocked on java.util.LinkedList@32b53d9e
> Blocked by 81 (PriorityRpcServer.handler=9,queue=1,port=16020)
> Stack:
>
> org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.toString(MultiVersionConcurrencyControl.java:234)
> java.lang.String.valueOf(String.java:2994)
> java.lang.StringBuilder.append(StringBuilder.java:131)
>
> org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.waitForRead(MultiVersionConcurrencyControl.java:209)
>
> org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.completeAndWait(MultiVersionConcurrencyControl.java:144)
>
> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3191)
>
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2837)
>
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2779)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp(RSRpcServices.java:697)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:659)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2047)
>
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32594)
> org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2120)
> org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:106)
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
> org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> java.lang.Thread.run(Thread.java:745)
> Thread 81 (PriorityRpcServer.handler=9,queue=1,port=16020):
> State: BLOCKED
> Blocked count: 691858
> Waited count: 1558138
> Blocked on java.lang.Object@2a5e9ae8
> Blocked by 75 (PriorityRpcServer.handler=3,queue=1,port=16020)
> Stack:
>
> org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.complete(MultiVersionConcurrencyControl.java:191)
>
> org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.completeAndWait(MultiVersionConcurrencyControl.java:143)
>
> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3191)
>
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2837)
>
> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2779)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp(RSRpcServices.java:697)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:659)
>
> org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2047)
>
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32594)
> org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2120)
> org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:106)
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
> org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> java.lang.Thread.run(Thread.java:745)
> Thread 80 (PriorityRpcServer.handler=8,queue=0,port=16020):
> {code}
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