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https://issues.apache.org/jira/browse/HDDS-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16962740#comment-16962740
]
Li Cheng commented on HDDS-2186:
--------------------------------
The OOM issue resolved in https://github.com/apache/hadoop-ozone/pull/28.
> Fix tests using MiniOzoneCluster for its memory related exceptions
> ------------------------------------------------------------------
>
> Key: HDDS-2186
> URL: https://issues.apache.org/jira/browse/HDDS-2186
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: test
> Affects Versions: 0.5.0
> Reporter: Li Cheng
> Assignee: Li Cheng
> Priority: Major
> Labels: flaky-test
> Fix For: 0.5.0
>
>
> After multi-raft usage, MiniOzoneCluster seems to be fishy and reports a
> bunch of 'out of memory' exceptions in ratis. Attached sample stacks.
>
> 2019-09-26 15:12:22,824
> [2e1e11ca-833a-4fbc-b948-3d93fc8e7288@group-218F3868CEA9-SegmentedRaftLogWorker]
> ERROR segmented.SegmentedRaftLogWorker
> (SegmentedRaftLogWorker.java:run(323)) -
> 2e1e11ca-833a-4fbc-b948-3d93fc8e7288@group-218F3868CEA9-SegmentedRaftLogWorker
> hit exception2019-09-26 15:12:22,824
> [2e1e11ca-833a-4fbc-b948-3d93fc8e7288@group-218F3868CEA9-SegmentedRaftLogWorker]
> ERROR segmented.SegmentedRaftLogWorker
> (SegmentedRaftLogWorker.java:run(323)) -
> 2e1e11ca-833a-4fbc-b948-3d93fc8e7288@group-218F3868CEA9-SegmentedRaftLogWorker
> hit exceptionjava.lang.OutOfMemoryError: Direct buffer memory at
> java.nio.Bits.reserveMemory(Bits.java:694) at
> java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123) at
> java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311) at
> org.apache.ratis.server.raftlog.segmented.BufferedWriteChannel.<init>(BufferedWriteChannel.java:41)
> at
> org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogOutputStream.<init>(SegmentedRaftLogOutputStream.java:72)
> at
> org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogWorker$StartLogSegment.execute(SegmentedRaftLogWorker.java:566)
> at
> org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogWorker.run(SegmentedRaftLogWorker.java:289)
> at java.lang.Thread.run(Thread.java:748)
>
> which leads to:
> 2019-09-26 15:12:23,029 [RATISCREATEPIPELINE1] ERROR
> pipeline.RatisPipelineProvider
> (RatisPipelineProvider.java:lambda$null$2(181)) - Failed invoke Ratis rpc
> org.apache.hadoop.hdds.scm.pipeline.RatisPipelineProvider$$Lambda$297/1222454951@55d1e990
> for c1f4d375-683b-42fe-983b-428a63aa88032019-09-26 15:12:23,029
> [RATISCREATEPIPELINE1] ERROR pipeline.RatisPipelineProvider
> (RatisPipelineProvider.java:lambda$null$2(181)) - Failed invoke Ratis rpc
> org.apache.hadoop.hdds.scm.pipeline.RatisPipelineProvider$$Lambda$297/1222454951@55d1e990
> for
> c1f4d375-683b-42fe-983b-428a63aa8803org.apache.ratis.protocol.TimeoutIOException:
> deadline exceeded after 2999881264ns at
> org.apache.ratis.grpc.GrpcUtil.tryUnwrapException(GrpcUtil.java:82) at
> org.apache.ratis.grpc.GrpcUtil.unwrapException(GrpcUtil.java:75) at
> org.apache.ratis.grpc.client.GrpcClientProtocolClient.blockingCall(GrpcClientProtocolClient.java:178)
> at
> org.apache.ratis.grpc.client.GrpcClientProtocolClient.groupAdd(GrpcClientProtocolClient.java:147)
> at
> org.apache.ratis.grpc.client.GrpcClientRpc.sendRequest(GrpcClientRpc.java:94)
> at
> org.apache.ratis.client.impl.RaftClientImpl.sendRequest(RaftClientImpl.java:278)
> at
> org.apache.ratis.client.impl.RaftClientImpl.groupAdd(RaftClientImpl.java:205)
> at
> org.apache.hadoop.hdds.scm.pipeline.RatisPipelineProvider.lambda$initializePipeline$1(RatisPipelineProvider.java:142)
> at
> org.apache.hadoop.hdds.scm.pipeline.RatisPipelineProvider.lambda$null$2(RatisPipelineProvider.java:177)
> at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
> at
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at
> java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291) at
> java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731) at
> java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at
> java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:401) at
> java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:734) at
> java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
> at
> java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233) at
> java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at
> java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
> at
> org.apache.hadoop.hdds.scm.pipeline.RatisPipelineProvider.lambda$callRatisRpc$3(RatisPipelineProvider.java:171)
> at
> java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
> at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at
> java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
> at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at
> java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)Caused
> by: org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException:
> DEADLINE_EXCEEDED: deadline exceeded after 2999881264ns at
> org.apache.ratis.thirdparty.io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:233)
> at
> org.apache.ratis.thirdparty.io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:214)
> at
> org.apache.ratis.thirdparty.io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:139)
> at
> org.apache.ratis.proto.grpc.AdminProtocolServiceGrpc$AdminProtocolServiceBlockingStub.groupManagement(AdminProtocolServiceGrpc.java:274)
> at
> org.apache.ratis.grpc.client.GrpcClientProtocolClient.lambda$groupAdd$3(GrpcClientProtocolClient.java:149)
> at
> org.apache.ratis.grpc.client.GrpcClientProtocolClient.blockingCall(GrpcClientProtocolClient.java:176)
> ... 25 more
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