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https://issues.apache.org/jira/browse/YARN-2820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306941#comment-14306941
 ] 

Hadoop QA commented on YARN-2820:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12696697/YARN-2820.000.patch
  against trunk revision ec950be.

    {color:green}+1 @author{color}.  The patch does not contain any @author 
tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new 
or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the 
total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with 
eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager.

Test results: 
https://builds.apache.org/job/PreCommit-YARN-Build/6518//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/6518//console

This message is automatically generated.

> Improve FileSystemRMStateStore to do retrying for better error recovery when 
> update/store failure.
> --------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2820
>                 URL: https://issues.apache.org/jira/browse/YARN-2820
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.5.0
>            Reporter: zhihai xu
>            Assignee: zhihai xu
>         Attachments: YARN-2820.000.patch
>
>
> Improve FileSystemRMStateStore to do retrying for better error recovery when 
> update/store failure due to IOException from HDFS.
> As discussed at YARN-1778, TestFSRMStateStore failure is also due to  
> IOException from HDFS in storeApplicationStateInternal.
> We will address YARN-1778 in this JIRA also.
> When we use FileSystemRMStateStore as yarn.resourcemanager.store.class, We 
> saw the following IOexception cause the RM shutdown.
> {code}
> FATAL
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Received a 
> org.apache.hadoop.yarn.server.resourcemanager.RMFatalEvent of type 
> STATE_STORE_OP_FAILED. Cause: 
> java.io.IOException: Unable to close file because the last block does not 
> have enough number of replicas. 
> at 
> org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:2132)
>  
> at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:2100) 
> at 
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:70)
>  
> at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:103) 
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.writeFile(FileSystemRMStateStore.java:522)
>  
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.updateFile(FileSystemRMStateStore.java:534)
>  
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.updateApplicationAttemptStateInternal(FileSystemRMStateStore.java:389)
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore.handleStoreEvent(RMStateStore.java:675)
>  
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:766)
>  
> at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:761)
>  
> at 
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:173)
>  
> at 
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:106) 
> at java.lang.Thread.run(Thread.java:744) 
> {code}
> The IOexception from YARN-1778 is 
> {code}
> 2015-02-03 00:09:19,092 INFO  [Thread-110] recovery.TestFSRMStateStore 
> (TestFSRMStateStore.java:run(285)) - testFSRMStateStoreClientRetry: Exception
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): NameNode still 
> not started
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.checkNNStartup(NameNodeRpcServer.java:1876)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:971)
>       at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:622)
>       at 
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:636)
>       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:973)
>       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2134)
>       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2130)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:415)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1669)
>       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2128)
>       at org.apache.hadoop.ipc.Client.call(Client.java:1474)
>       at org.apache.hadoop.ipc.Client.call(Client.java:1405)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
>       at com.sun.proxy.$Proxy23.mkdirs(Unknown Source)
>       at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:557)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:606)
>       at 
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
>       at 
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:101)
>       at com.sun.proxy.$Proxy24.mkdirs(Unknown Source)
>       at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2991)
>       at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2961)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:973)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:969)
>       at 
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:969)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:962)
>       at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1869)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.storeApplicationStateInternal(FileSystemRMStateStore.java:364)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.TestFSRMStateStore$2.run(TestFSRMStateStore.java:273)
> {code}
> It will be better to  Improve FileSystemRMStateStore to do retrying for 
> better error recovery when update/store failure



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