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Posted to dev@lucene.apache.org by "Shikhar Bhushan (JIRA)" <ji...@apache.org> on 2015/06/05 22:19:01 UTC
[jira] [Updated] (LUCENE-6482) Class loading deadlock relating to
NamedSPILoader
[ https://issues.apache.org/jira/browse/LUCENE-6482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shikhar Bhushan updated LUCENE-6482:
------------------------------------
Attachment: CodecLoadingDeadlockTest.java
[~thetaphi] I have had some luck reproducing the problem quite consistently with the attached test. If you uncomment the first line in the main() so that Codec is previously initialized before the threads start, the deadlock doesn't happen.
> Class loading deadlock relating to NamedSPILoader
> -------------------------------------------------
>
> Key: LUCENE-6482
> URL: https://issues.apache.org/jira/browse/LUCENE-6482
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 4.9.1
> Reporter: Shikhar Bhushan
> Assignee: Uwe Schindler
> Attachments: CodecLoadingDeadlockTest.java
>
>
> This issue came up for us several times with Elasticsearch 1.3.4 (Lucene 4.9.1), with many threads seeming deadlocked but RUNNABLE:
> {noformat}
> "elasticsearch[search77-es2][generic][T#43]" #160 daemon prio=5 os_prio=0 tid=0x00007f79180c5800 nid=0x3d1f in Object.wait() [0x00007f79d9289000]
> java.lang.Thread.State: RUNNABLE
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
> at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:457)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:912)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:758)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:453)
> at org.elasticsearch.common.lucene.Lucene.readSegmentInfos(Lucene.java:98)
> at org.elasticsearch.index.store.Store.readSegmentsInfo(Store.java:126)
> at org.elasticsearch.index.store.Store.access$300(Store.java:76)
> at org.elasticsearch.index.store.Store$MetadataSnapshot.buildMetadata(Store.java:465)
> at org.elasticsearch.index.store.Store$MetadataSnapshot.<init>(Store.java:456)
> at org.elasticsearch.index.store.Store.readMetadataSnapshot(Store.java:281)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.listStoreMetaData(TransportNodesListShardStoreMetaData.java:186)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.nodeOperation(TransportNodesListShardStoreMetaData.java:140)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.nodeOperation(TransportNodesListShardStoreMetaData.java:61)
> at org.elasticsearch.action.support.nodes.TransportNodesOperationAction$NodeTransportHandler.messageReceived(TransportNodesOperationAction.java:277)
> at org.elasticsearch.action.support.nodes.TransportNodesOperationAction$NodeTransportHandler.messageReceived(TransportNodesOperationAction.java:268)
> at org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:275)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> It didn't really make sense to see RUNNABLE threads in Object.wait(), but this seems to be symptomatic of deadlocks in static initialization (http://ternarysearch.blogspot.ru/2013/07/static-initialization-deadlock.html).
> I found LUCENE-5573 as an instance of this having come up with Lucene code before.
> I'm not sure what exactly is going on, but the deadlock in this case seems to involve these threads:
> {noformat}
> "elasticsearch[search77-es2][clusterService#updateTask][T#1]" #79 daemon prio=5 os_prio=0 tid=0x00007f7b155ff800 nid=0xd49 in Object.wait() [0x00007f79daed8000]
> java.lang.Thread.State: RUNNABLE
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
> at java.lang.Class.newInstance(Class.java:433)
> at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:67)
> - locked <0x000000061fef4968> (a org.apache.lucene.util.NamedSPILoader)
> at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:47)
> at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:37)
> at org.apache.lucene.codecs.PostingsFormat.<clinit>(PostingsFormat.java:44)
> at org.elasticsearch.index.codec.postingsformat.PostingFormats.<clinit>(PostingFormats.java:67)
> at org.elasticsearch.index.codec.CodecModule.configurePostingsFormats(CodecModule.java:126)
> at org.elasticsearch.index.codec.CodecModule.configure(CodecModule.java:178)
> at org.elasticsearch.common.inject.AbstractModule.configure(AbstractModule.java:60)
> - locked <0x000000061fef49e8> (a org.elasticsearch.index.codec.CodecModule)
> at org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(Elements.java:204)
> at org.elasticsearch.common.inject.spi.Elements.getElements(Elements.java:85)
> at org.elasticsearch.common.inject.InjectorShell$Builder.build(InjectorShell.java:130)
> at org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:99)
> - locked <0x000000061fef4c10> (a org.elasticsearch.common.inject.InheritingState)
> at org.elasticsearch.common.inject.InjectorImpl.createChildInjector(InjectorImpl.java:131)
> at org.elasticsearch.common.inject.ModulesBuilder.createChildInjector(ModulesBuilder.java:69)
> at org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:296)
> - locked <0x000000061fef4cd0> (a org.elasticsearch.indices.InternalIndicesService)
> at org.elasticsearch.indices.cluster.IndicesClusterStateService.applyNewIndices(IndicesClusterStateService.java:312)
> at org.elasticsearch.indices.cluster.IndicesClusterStateService.clusterChanged(IndicesClusterStateService.java:181)
> - locked <0x000000061fef4e70> (a java.lang.Object)
> at org.elasticsearch.cluster.service.InternalClusterService$UpdateTask.run(InternalClusterService.java:444)
> at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:153)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> {noformat}
> "elasticsearch[search77-es2][generic][T#1]" #80 daemon prio=5 os_prio=0 tid=0x00007f794400a000 nid=0xd4b in Object.wait() [0x00007f79dac56000]
> java.lang.Thread.State: RUNNABLE
> at org.apache.lucene.codecs.simpletext.SimpleTextCodec.<init>(SimpleTextCodec.java:37)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
> at java.lang.Class.newInstance(Class.java:433)
> at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:67)
> - locked <0x000000061fcf1f50> (a org.apache.lucene.util.NamedSPILoader)
> at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:47)
> at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:37)
> at org.apache.lucene.codecs.Codec.<clinit>(Codec.java:41)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
> at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:457)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:912)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:758)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:453)
> at org.elasticsearch.common.lucene.Lucene.readSegmentInfos(Lucene.java:98)
> at org.elasticsearch.index.store.Store.readSegmentsInfo(Store.java:126)
> at org.elasticsearch.index.store.Store.access$300(Store.java:76)
> at org.elasticsearch.index.store.Store$MetadataSnapshot.buildMetadata(Store.java:465)
> at org.elasticsearch.index.store.Store$MetadataSnapshot.<init>(Store.java:456)
> at org.elasticsearch.index.store.Store.readMetadataSnapshot(Store.java:281)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.listStoreMetaData(TransportNodesListShardStoreMetaData.java:186)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.nodeOperation(TransportNodesListShardStoreMetaData.java:140)
> at org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData.nodeOperation(TransportNodesListShardStoreMetaData.java:61)
> at org.elasticsearch.action.support.nodes.TransportNodesOperationAction$NodeTransportHandler.messageReceived(TransportNodesOperationAction.java:277)
> at org.elasticsearch.action.support.nodes.TransportNodesOperationAction$NodeTransportHandler.messageReceived(TransportNodesOperationAction.java:268)
> at org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler.run(MessageChannelHandler.java:275)
> 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)
> {noformat}
> Full thread dump: https://gist.github.com/shikhar/d0f6d2d008f45d2d4f91
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