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https://issues.apache.org/jira/browse/HBASE-14977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060404#comment-15060404
]
Matteo Bertozzi commented on HBASE-14977:
-----------------------------------------
on a local run I get:
{noformat}
org.junit.runners.model.TestTimedOutException: test timed out after 20000
milliseconds
at
org.apache.hadoop.hbase.ScheduledChore.getName(ScheduledChore.java:272)
at
org.apache.hadoop.hbase.ScheduledChore.toString(ScheduledChore.java:344)
at java.lang.String.valueOf(String.java:2847)
at java.lang.StringBuilder.append(StringBuilder.java:128)
at java.util.AbstractCollection.toString(AbstractCollection.java:458)
at java.lang.String.valueOf(String.java:2847)
at java.lang.StringBuilder.append(StringBuilder.java:128)
at org.apache.hadoop.hbase.ChoreService.shutdown(ChoreService.java:323)
at
org.apache.hadoop.hbase.TestChoreService.shutdownService(TestChoreService.java:363)
at
org.apache.hadoop.hbase.TestChoreService.testShutdownRejectsNewSchedules(TestChoreService.java:844)
{noformat}
{noformat}
Potentially hanging thread: testShutdownRejectsNewSchedules_ChoreService_1
org.apache.hadoop.hbase.ChoreService.isChoreScheduled(ChoreService.java:205)
org.apache.hadoop.hbase.ScheduledChore.isScheduled(ScheduledChore.java:314)
org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:176)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
java.lang.Thread.run(Thread.java:745)
Potentially hanging thread: Time-limited test
org.apache.hadoop.hbase.ScheduledChore.getName(ScheduledChore.java:272)
org.apache.hadoop.hbase.ScheduledChore.toString(ScheduledChore.java:344)
java.lang.String.valueOf(String.java:2847)
java.lang.StringBuilder.append(StringBuilder.java:128)
java.util.AbstractCollection.toString(AbstractCollection.java:458)
java.lang.String.valueOf(String.java:2847)
java.lang.StringBuilder.append(StringBuilder.java:128)
org.apache.hadoop.hbase.ChoreService.shutdown(ChoreService.java:323)
org.apache.hadoop.hbase.TestChoreService.shutdownService(TestChoreService.java:363)
org.apache.hadoop.hbase.TestChoreService.testShutdownRejectsNewSchedules(TestChoreService.java:844)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
java.util.concurrent.FutureTask.run(FutureTask.java:262)
java.lang.Thread.run(Thread.java:745)
{noformat}
> ChoreService.shutdown may result in ConcurrentModificationException
> -------------------------------------------------------------------
>
> Key: HBASE-14977
> URL: https://issues.apache.org/jira/browse/HBASE-14977
> Project: HBase
> Issue Type: Bug
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Minor
> Fix For: 2.0.0, 1.2.0, 1.3.0, 1.1.4
>
> Attachments: HBASE-14977-v1.patch
>
>
> As seen in this test:
> https://builds.apache.org/job/HBase-1.3/jdk=latest1.8,label=Hadoop/425/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.regionserver.compactions.TestFIFOCompactionPolicy-output.txt
> We need to make shutdown method synchronized to avoid this issue.
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