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https://issues.apache.org/jira/browse/HDDS-2984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai reassigned HDDS-2984:
--------------------------------------

    Assignee: Attila Doroszlai

> Allocate Block failing with NPE
> -------------------------------
>
>                 Key: HDDS-2984
>                 URL: https://issues.apache.org/jira/browse/HDDS-2984
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Bharat Viswanadham
>            Assignee: Attila Doroszlai
>            Priority: Major
>              Labels: teragentest
>         Attachments: Screen Shot 2020-02-05 at 2.48.56 PM.png
>
>
> When running teragen in one of the run observed this error.
> {code:java}
> 05 14:43:16,635 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception 
> running child : INTERNAL_ERROR 
> org.apache.hadoop.ozone.om.exceptions.OMException: 
> java.lang.NullPointerException at 
> java.util.Objects.requireNonNull(Objects.java:203) at 
> java.util.Optional.<init>(Optional.java:96) at 
> java.util.Optional.of(Optional.java:108) at 
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineMetrics.incNumBlocksAllocated(SCMPipelineMetrics.java:118)
>  at 
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager.incNumBlocksAllocatedMetric(SCMPipelineManager.java:520)
>  at 
> org.apache.hadoop.hdds.scm.block.BlockManagerImpl.newBlock(BlockManagerImpl.java:265)
>  at 
> org.apache.hadoop.hdds.scm.block.BlockManagerImpl.allocateBlock(BlockManagerImpl.java:233)
>  at 
> org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer.allocateBlock(SCMBlockProtocolServer.java:188)
>  at 
> org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.allocateScmBlock(ScmBlockLocationProtocolServerSideTranslatorPB.java:159)
>  at 
> org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.processMessage(ScmBlockLocationProtocolServerSideTranslatorPB.java:117)
>  at 
> org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:72)
>  at 
> org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.send(ScmBlockLocationProtocolServerSideTranslatorPB.java:98)
>  at 
> org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:13157)
>  at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
>  at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070) at 
> org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:984) at 
> org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:912) at 
> java.security.AccessController.doPrivileged(Native Method) at 
> javax.security.auth.Subject.doAs(Subject.java:422) at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1876)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2882) at 
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.handleError(OzoneManagerProtocolClientSideTranslatorPB.java:792)
>  at 
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.createFile(OzoneManagerProtocolClientSideTranslatorPB.java:1596)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke(Method.java:498) at 
> org.apache.hadoop.hdds.tracing.TraceAllMethod.invoke(TraceAllMethod.java:71) 
> at com.sun.proxy.$Proxy18.createFile(Unknown Source) at 
> org.apache.hadoop.ozone.client.rpc.RpcClient.createFile(RpcClient.java:1071) 
> at 
> org.apache.hadoop.ozone.client.OzoneBucket.createFile(OzoneBucket.java:538) 
> at 
> org.apache.hadoop.fs.ozone.BasicOzoneClientAdapterImpl.createFile(BasicOzoneClientAdapterImpl.java:208)
>  at 
> org.apache.hadoop.fs.ozone.BasicOzoneFileSystem.createOutputStream(BasicOzoneFileSystem.java:256)
>  at 
> org.apache.hadoop.fs.ozone.BasicOzoneFileSystem.create(BasicOzoneFileSystem.java:237)
>  at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1133) at 
> org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1113) at 
> org.apache.hadoop.fs.FileSystem.create(FileSystem.java:1002) at 
> org.apache.hadoop.fs.FileSystem.create(FileSystem.java:990) at 
> org.apache.hadoop.examples.terasort.TeraOutputFormat.getRecordWriter(TeraOutputFormat.java:141)
>  at 
> org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.<init>(MapTask.java:659)
>  at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:779) at 
> org.apache.hadoop.mapred.MapTask.run(MapTask.java:347) at 
> org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174) at 
> java.security.AccessController.doPrivileged(Native Method) at 
> javax.security.auth.Subject.doAs(Subject.java:422) at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1876)
>  at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168){code}
>  



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