Michael Dürig created OAK-3493:
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Summary: Deadlock when closing a concurrently used FileStore 2.0
Key: OAK-3493
URL: https://issues.apache.org/jira/browse/OAK-3493
Project: Jackrabbit Oak
Issue Type: Bug
Components: segmentmk
Reporter: Michael Dürig
Assignee: Michael Dürig
Fix For: 1.3.8
A deadlock was detected while stopping the {{SegmentCompactionIT}} using the
exposed MBean.
{noformat}
"main@1" prio=5 tid=0x1 nid=NA waiting for monitor entry
waiting for pool-1-thread-10@2111 to release lock on <0xae8> (a
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.dropCache(SegmentWriter.java:871)
at
org.apache.jackrabbit.oak.plugins.segment.file.FileStore.close(FileStore.java:1031)
- locked <0xae7> (a org.apache.jackrabbit.oak.plugins.segment.file.FileStore)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentCompactionIT.tearDown(SegmentCompactionIT.java:282)
"pool-1-thread-10@2111" prio=5 tid=0x1d nid=NA waiting for monitor entry
java.lang.Thread.State: BLOCKED
blocks main@1
waiting for main@1 to release lock on <0xae7> (a
org.apache.jackrabbit.oak.plugins.segment.file.FileStore)
at
org.apache.jackrabbit.oak.plugins.segment.file.FileStore.writeSegment(FileStore.java:1155)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.flush(SegmentWriter.java:253)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.prepare(SegmentWriter.java:350)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeListBucket(SegmentWriter.java:468)
- locked <0xae8> (a org.apache.jackrabbit.oak.plugins.segment.SegmentWriter)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeList(SegmentWriter.java:719)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1211)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter$2.childNodeChanged(SegmentWriter.java:1156)
at
org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.compareAgainstBaseState(ModifiedNodeState.java:399)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1147)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeNode(SegmentWriter.java:1175)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder.getNodeState(SegmentNodeBuilder.java:100)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.prepare(SegmentNodeStore.java:451)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.optimisticMerge(SegmentNodeStore.java:474)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore$Commit.execute(SegmentNodeStore.java:530)
at
org.apache.jackrabbit.oak.plugins.segment.SegmentNodeStore.merge(SegmentNodeStore.java:208)
{noformat}
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