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https://issues.apache.org/jira/browse/HBASE-15030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15068622#comment-15068622
]
Hadoop QA commented on HBASE-15030:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12779080/HBASE-15030-v0.patch
against master branch at commit 1af98f255132ef6716a1f6ba1d8d71a36ea38840.
ATTACHMENT ID: 12779080
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:green}+1 hadoop versions{color}. The patch compiles with all
supported hadoop versions (2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.6.1 2.7.0
2.7.1)
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 protoc{color}. The applied patch does not increase the
total number of protoc compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:green}+1 checkstyle{color}. The applied patch does not generate new
checkstyle errors.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 2.0.3) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 lineLengths{color}. The patch does not introduce lines
longer than 100
{color:green}+1 site{color}. The mvn post-site goal succeeds with this
patch.
{color:green}+1 core tests{color}. The patch passed unit tests in .
{color:green}+1 zombies{color}. No zombie tests found running at the end of
the build.
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/16974//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/16974//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/16974//artifact/patchprocess/checkstyle-aggregate.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/16974//console
This message is automatically generated.
> Deadlock in master TableNamespaceManager while running
> IntegrationTestDDLMasterFailover
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-15030
> URL: https://issues.apache.org/jira/browse/HBASE-15030
> Project: HBase
> Issue Type: Bug
> Components: proc-v2
> Affects Versions: 2.0.0, 1.3.0
> Reporter: Samir Ahmic
> Assignee: Samir Ahmic
> Attachments: HBASE-15030-v0.patch
>
>
> I was running IntegrationTestDDLMasterFailover on distributed cluster when i
> notice this. Here is relevant part of master's jstack:
> {code}
> "ProcedureExecutor-1" daemon prio=10 tid=0x00007fd2d407f800 nid=0x3332
> waiting for monitor entry [0x00007fd2c2834000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.releaseExclusiveLock(TableNamespaceManager.java:157)
> - waiting to lock <0x0000000725c36a48> (a
> org.apache.hadoop.hbase.master.TableNamespaceManager)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.releaseLock(CreateNamespaceProcedure.java:216)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.releaseLock(CreateNamespaceProcedure.java:43)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:842)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:794)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$400(ProcedureExecutor.java:75)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$2.run(ProcedureExecutor.java:479)
> Locked ownable synchronizers:
> - <0x000000072574b330> (a
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
> "ProcedureExecutor-3" daemon prio=10 tid=0x00007fd2d41e5800 nid=0x3334
> waiting on condition [0x00007fd2c2632000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x000000072574b330> (a
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
> at
> java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireNanos(AbstractQueuedSynchronizer.java:929)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireNanos(AbstractQueuedSynchronizer.java:1245)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.tryLock(ReentrantReadWriteLock.java:1115)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.acquireExclusiveLock(TableNamespaceManager.java:150)
> - locked <0x0000000725c36a48> (a
> org.apache.hadoop.hbase.master.TableNamespaceManager)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.acquireLock(CreateNamespaceProcedure.java:210)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.acquireLock(CreateNamespaceProcedure.java:43)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeRollback(ProcedureExecutor.java:941)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:821)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:794)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$400(ProcedureExecutor.java:75)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$2.run(ProcedureExecutor.java:479)
> Locked ownable synchronizers:
> - None
> Found one Java-level deadlock:
> =============================
> "ProcedureExecutor-3":
> waiting for ownable synchronizer 0x000000072574b330, (a
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync),
> which is held by "ProcedureExecutor-1"
> "ProcedureExecutor-1":
> waiting to lock monitor 0x00007fd2cc328908 (object 0x0000000725c36a48, a
> org.apache.hadoop.hbase.master.TableNamespaceManager),
> which is held by "ProcedureExecutor-3"
> Java stack information for the threads listed above:
> ===================================================
> "ProcedureExecutor-3":
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x000000072574b330> (a
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
> at
> java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireNanos(AbstractQueuedSynchronizer.java:929)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireNanos(AbstractQueuedSynchronizer.java:1245)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.tryLock(ReentrantReadWriteLock.java:1115)
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.acquireExclusiveLock(TableNamespaceManager.java:150)
> - locked <0x0000000725c36a48> (a
> org.apache.hadoop.hbase.master.TableNamespaceManager)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.acquireLock(CreateNamespaceProcedure.java:210)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.acquireLock(CreateNamespaceProcedure.java:43)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeRollback(ProcedureExecutor.java:941)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:821)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:794)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$400(ProcedureExecutor.java:75)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$2.run(ProcedureExecutor.java:479)
> "ProcedureExecutor-1":
> at
> org.apache.hadoop.hbase.master.TableNamespaceManager.releaseExclusiveLock(TableNamespaceManager.java:157)
> - waiting to lock <0x0000000725c36a48> (a
> org.apache.hadoop.hbase.master.TableNamespaceManager)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.releaseLock(CreateNamespaceProcedure.java:216)
> at
> org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure.releaseLock(CreateNamespaceProcedure.java:43)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:842)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:794)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$400(ProcedureExecutor.java:75)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$2.run(ProcedureExecutor.java:479)
> Found 1 deadlock.
> {code}
> I will try to dig more info about why this happened logs not showing much.
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