[
https://issues.apache.org/jira/browse/OAK-587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13561645#comment-13561645
]
Michael Dürig commented on OAK-587:
-----------------------------------
Making said test a bit more aggressive I quickly found several exception caught
in the catch all handlers in {{DefaultRvisionStore.gc()}}:
{code}
java.lang.NullPointerException
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.markUncommittedNodes(DefaultRevisionStore.java:595)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.gc(DefaultRevisionStore.java:535)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStoreTest$2.run(DefaultRevisionStoreTest.java:143)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at
java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
{code}
{code}
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$EntryIterator.next(HashMap.java:834)
at java.util.HashMap$EntryIterator.next(HashMap.java:832)
at java.util.HashMap.putAll(HashMap.java:523)
at java.util.Collections$SynchronizedMap.putAll(Collections.java:1985)
at
org.apache.jackrabbit.mk.persistence.InMemPersistence.sweep(InMemPersistence.java:182)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.gc(DefaultRevisionStore.java:578)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStoreTest$2.run(DefaultRevisionStoreTest.java:143)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at
java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
{code}
{code}
org.apache.jackrabbit.mk.store.NotFoundException:
78a45769aec95b5abf0a8d6b75d3ff2648069bd1
at
org.apache.jackrabbit.mk.persistence.InMemPersistence.markObject(InMemPersistence.java:174)
at
org.apache.jackrabbit.mk.persistence.InMemPersistence.markNode(InMemPersistence.java:151)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.markNode(DefaultRevisionStore.java:713)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.markCommit(DefaultRevisionStore.java:703)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStoreTest$1.markCommits(DefaultRevisionStoreTest.java:64)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStore.gc(DefaultRevisionStore.java:552)
at
org.apache.jackrabbit.mk.store.DefaultRevisionStoreTest$2.run(DefaultRevisionStoreTest.java:143)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at
java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
{code}
> DefaultRevisionStoreTest.testConcurrentGC fails every now and then.
> -------------------------------------------------------------------
>
> Key: OAK-587
> URL: https://issues.apache.org/jira/browse/OAK-587
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: mk
> Reporter: angela
>
> i marked the failing test with @Ignore.
> it would be nice though if someone could investigate why the test is failing.
> thanks.
> Tests in error:
> testConcurrentGC(org.apache.jackrabbit.mk.store.DefaultRevisionStoreTest):
> java.util.concurrent.ExecutionException:
> org.apache.jackrabbit.mk.store.NotFoundException:
> 78a45769aec95b5abf0a8d6b75d3ff2648069bd1
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