Francesco Mari created OAK-3235:
-----------------------------------
Summary: Deadlock when closing a concurrently used FileStore
Key: OAK-3235
URL: https://issues.apache.org/jira/browse/OAK-3235
Project: Jackrabbit Oak
Issue Type: Bug
Components: segmentmk
Reporter: Francesco Mari
Priority: Critical
A deadlock was detected while stopping the {{SegmentCompactionIT}} using the
exposed MBean.
{noformat}
Found one Java-level deadlock:
=============================
"pool-1-thread-23":
waiting to lock monitor 0x00007fa8cf1f0488 (object 0x00000007a0081e48, a
org.apache.jackrabbit.oak.plugins.segment.file.FileStore),
which is held by "main"
"main":
waiting to lock monitor 0x00007fa8cc015ff8 (object 0x00000007a011f750, a
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter),
which is held by "pool-1-thread-23"
Java stack information for the threads listed above:
===================================================
"pool-1-thread-23":
at
org.apache.jackrabbit.oak.plugins.segment.file.FileStore.writeSegment(FileStore.java:948)
- waiting to lock <0x00000007a0081e48> (a
org.apache.jackrabbit.oak.plugins.segment.file.FileStore)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.flush(SegmentWriter.java:228)
- locked <0x00000007a011f750> (a
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.prepare(SegmentWriter.java:329)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeListBucket(SegmentWriter.java:447)
- locked <0x00000007a011f750> (a
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeList(SegmentWriter.java:698)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1190)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1135)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:400)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1126)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1154)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.getNodeState(SegmentNodeBuilder.java:100)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.updated(SegmentNodeBuilder.java:85)
at
org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder.updated(MemoryNodeBuilder.java:214)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.updated(SegmentNodeBuilder.java:81)
at
org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder.setChildNode(MemoryNodeBuilder.java:346)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeAdded(AbstractRebaseDiff.java:211)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:527)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:531)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:418)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord$2.childNodeChanged(MapRecord.java:404)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:488)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:394)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.spi.state.AbstractRebaseDiff.childNodeChanged(AbstractRebaseDiff.java:219)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:488)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compareBranch(MapRecord.java:565)
at
org.apache.jackrabbit.oak.plugins.segment.MapRecord.compare(MapRecord.java:470)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:583)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.prepare(SegmentNodeStore.java:446)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.optimisticMerge(SegmentNodeStore.java:471)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.execute(SegmentNodeStore.java:527)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore.merge(SegmentNodeStore.java:205)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentCompactionIT$RandomWriter.call(SegmentCompactionIT.java:426)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentCompactionIT$RandomWriter.call(SegmentCompactionIT.java:399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"main":
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.dropCache(SegmentWriter.java:850)
- waiting to lock <0x00000007a011f750> (a
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter)
at
org.apache.jackrabbit.oak.plugins.segment.file.FileStore.close(FileStore.java:830)
- locked <0x00000007a0081e48> (a
org.apache.jackrabbit.oak.plugins.segment.file.FileStore)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentCompactionIT.tearDown(SegmentCompactionIT.java:266)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:36)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at
org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at
org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at
org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at
org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at
org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at
org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Found 1 deadlock.
{noformat}
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