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From "Muga Nishizawa (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-6139) JobTracker blocked on TIMED_WAITING DFSOutputStream.waitForAckedSeqno() running
Date Fri, 21 Mar 2014 21:09:43 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Muga Nishizawa resolved HDFS-6139.
----------------------------------

    Resolution: Invalid

> JobTracker blocked on TIMED_WAITING DFSOutputStream.waitForAckedSeqno() running
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-6139
>                 URL: https://issues.apache.org/jira/browse/HDFS-6139
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 2.0.0-alpha
>            Reporter: Muga Nishizawa
>
> We're using CDH 4.2.1.  The following is a part of threaddump on our JobTracker.
> {code}
> "IPC Server handler 249 on 8021" daemon prio=10 tid=0x00007fce80e2c000 nid=0x718e in
Object.wait() [0x00007fc92afe6000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00007fc95f5ffba8> (a java.util.LinkedList)
>         at org.apache.hadoop.hdfs.DFSOutputStream.waitForAckedSeqno(DFSOutputStream.java:1708)
>         - locked <0x00007fc95f5ffba8> (a java.util.LinkedList)
>         at org.apache.hadoop.hdfs.DFSOutputStream.flushInternal(DFSOutputStream.java:1694)
>         at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:1778)
>         - locked <0x00007fc95f5ff898> (a org.apache.hadoop.hdfs.DFSOutputStream)
>         at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:66)
>         at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:99)
>         at org.apache.hadoop.mapred.JobTracker.submitJob(JobTracker.java:3562)
>         - locked <0x00007fc9652787e0> (a org.apache.hadoop.mapred.JobTracker)
>         at org.apache.hadoop.mapred.JobTracker.submitJob(JobTracker.java:3475)
>         at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.WritableRpcEngine$Server$WritableRpcInvoker.call(WritableRpcEngine.java:474)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1695)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1691)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1689)
> ... ...
> "Thread-9489990" daemon prio=10 tid=0x00007fce6c01b000 nid=0x14e1 runnable [0x00007fc8f38f7000]
>    java.lang.Thread.State: RUNNABLE
>         at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
>         at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
>         at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
>         - locked <0x00007fc9631201d0> (a sun.nio.ch.Util$1)
>         - locked <0x00007fc9631201e8> (a java.util.Collections$UnmodifiableSet)
>         - locked <0x00007fc963120158> (a sun.nio.ch.EPollSelectorImpl)
>         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
>         at org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.select(SocketIOWithTimeout.java:336)
>         at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:158)
>         at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:156)
>         at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:129)
>         at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:117)
>         at java.io.FilterInputStream.read(FilterInputStream.java:66)
>         at java.io.FilterInputStream.read(FilterInputStream.java:66)
>         at org.apache.hadoop.hdfs.protocol.HdfsProtoUtil.vintPrefixed(HdfsProtoUtil.java:169)
>         at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1105)
>         at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1039)
>         at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:487)
> {code}



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