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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (LUCENE-6214) IW deadlocks if commit and reopen happens concurrently while exception is hit
Date Wed, 25 Feb 2015 09:16:04 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-6214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless reopened LUCENE-6214:
----------------------------------------

Reopen for 4.10.4

> IW deadlocks if commit and reopen happens concurrently while exception is hit
> -----------------------------------------------------------------------------
>
>                 Key: LUCENE-6214
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6214
>             Project: Lucene - Core
>          Issue Type: Bug
>    Affects Versions: 5.0
>            Reporter: Simon Willnauer
>            Assignee: Michael McCandless
>            Priority: Blocker
>             Fix For: 4.10.4, 5.0, Trunk, 5.1
>
>         Attachments: LUCENE-6214.patch, LUCENE-6214.patch
>
>
> I just hit this while working on an elasticseach test using a lucene 5.1 snapshot (5.1.0-snapshot-1654549).
The test throws random exceptions via MockDirWrapper and deadlocks, jstack says:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "elasticsearch[node_2][refresh][T#2]":
>   waiting to lock monitor 0x00007fe51314c098 (object 0x00000007018ee8d8, a java.lang.Object),
>   which is held by "elasticsearch[node_2][generic][T#1]"
> "elasticsearch[node_2][generic][T#1]":
>   waiting to lock monitor 0x00007fe512d74b68 (object 0x00000007018ee8e8, a java.lang.Object),
>   which is held by "elasticsearch[node_2][refresh][T#2]"
> Java stack information for the threads listed above:
> ===================================================
> "elasticsearch[node_2][refresh][T#2]":
> 	at org.apache.lucene.index.IndexWriter.tragicEvent(IndexWriter.java:4441)
> 	- waiting to lock <0x00000007018ee8d8> (a java.lang.Object)
> 	at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:436)
> 	- locked <0x00000007018ee8e8> (a java.lang.Object)
> 	at org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:281)
> 	at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:256)
> 	at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:246)
> 	at org.apache.lucene.index.FilterDirectoryReader.doOpenIfChanged(FilterDirectoryReader.java:104)
> 	at org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:123)
> 	at org.apache.lucene.search.SearcherManager.refreshIfNeeded(SearcherManager.java:137)
> 	at org.apache.lucene.search.SearcherManager.refreshIfNeeded(SearcherManager.java:58)
> 	at org.apache.lucene.search.ReferenceManager.doMaybeRefresh(ReferenceManager.java:176)
> 	at org.apache.lucene.search.ReferenceManager.maybeRefreshBlocking(ReferenceManager.java:253)
> 	at org.elasticsearch.index.engine.internal.InternalEngine.refresh(InternalEngine.java:703)
> 	at org.elasticsearch.index.shard.IndexShard.refresh(IndexShard.java:500)
> 	at org.elasticsearch.index.shard.IndexShard$EngineRefresher$1.run(IndexShard.java:954)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:745)
> "elasticsearch[node_2][generic][T#1]":
> 	at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2730)
> 	- waiting to lock <0x00000007018ee8e8> (a java.lang.Object)
> 	- locked <0x00000007018ee8d8> (a java.lang.Object)
> 	at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2888)
> 	- locked <0x00000007018ee8d8> (a java.lang.Object)
> 	at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2855)
> 	at org.elasticsearch.index.engine.internal.InternalEngine.commitIndexWriter(InternalEngine.java:722)
> 	at org.elasticsearch.index.engine.internal.InternalEngine.flush(InternalEngine.java:800)
> 	at org.elasticsearch.index.engine.internal.InternalEngine$RecoveryCounter.endRecovery(InternalEngine.java:1520)
> 	at org.elasticsearch.index.engine.internal.InternalEngine$RecoveryCounter.close(InternalEngine.java:1533)
> 	at org.elasticsearch.common.lease.Releasables.close(Releasables.java:45)
> 	at org.elasticsearch.common.lease.Releasables.closeWhileHandlingException(Releasables.java:70)
> 	at org.elasticsearch.common.lease.Releasables.closeWhileHandlingException(Releasables.java:75)
> 	at org.elasticsearch.index.engine.internal.InternalEngine.recover(InternalEngine.java:1048)
> 	at org.elasticsearch.index.shard.IndexShard.recover(IndexShard.java:635)
> 	at org.elasticsearch.indices.recovery.RecoverySource.recover(RecoverySource.java:120)
> 	at org.elasticsearch.indices.recovery.RecoverySource.access$200(RecoverySource.java:48)
> 	at org.elasticsearch.indices.recovery.RecoverySource$StartRecoveryTransportRequestHandler.messageReceived(RecoverySource.java:141)
> 	at org.elasticsearch.indices.recovery.RecoverySource$StartRecoveryTransportRequestHandler.messageReceived(RecoverySource.java:127)
> 	at org.elasticsearch.transport.local.LocalTransport$2.doRun(LocalTransport.java:287)
> 	at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:36)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:745)
> Found 1 deadlock.
> {noformat}



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