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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6609) Deadlock in DFSClient#getBlockLocations even with the security disabled
Date Wed, 03 Mar 2010 22:18:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840916#action_12840916
] 

Hadoop QA commented on HADOOP-6609:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12437775/c-6609.patch
  against trunk revision 918624.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 patch.  The patch command could not apply the patch.

Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/404/console

This message is automatically generated.

> Deadlock in DFSClient#getBlockLocations even with the security disabled
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-6609
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6609
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Hairong Kuang
>            Assignee: Owen O'Malley
>         Attachments: c-6609.patch, c-6609.patch
>
>
> Here is the stack trace:
> "IPC Client (47) connection to XX" daemon
> prio=10 tid=0x00002aaae0369c00 nid=0x655b waiting for monitor entry [0x000000004181f000..0x000000004181fb80]
>    java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.hadoop.io.UTF8.readChars(UTF8.java:210)
> - waiting to lock <0x00002aaab3eaee50> (a org.apache.hadoop.io.DataOutputBuffer)
> at org.apache.hadoop.io.UTF8.readString(UTF8.java:203)
> at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:179)
> at org.apache.hadoop.io.ObjectWritable.readFields(ObjectWritable.java:66)
> at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:638)
> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:573)
> "IPC Client (47) connection to /0.0.0.0:50030 from job_201002262308_0007"
> daemon prio=10 tid=0x00002aaae0272800 nid=0x6556 waiting for monitor entry [0x000000004131a000..0x000000004131ad00]
>    java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.hadoop.io.UTF8.readChars(UTF8.java:210) 
> - waiting to lock <0x00002aaab3eaee50> (a org.apache.hadoop.io.DataOutputBuffer)
> at org.apache.hadoop.io.UTF8.readString(UTF8.java:203)
> at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:179)
> at org.apache.hadoop.io.ObjectWritable.readFields(ObjectWritable.java:66)
> at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:638)
> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:573)
> "main" prio=10 tid=0x0000000046c17800 nid=0x6544 in Object.wait() [0x0000000040207000..0x0000000040209ec0]
>    java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method) 
> - waiting on <0x00002aaacee6bc38> (a org.apache.hadoop.ipc.Client$Call)
> at java.lang.Object.wait(Object.java:485)
> at org.apache.hadoop.ipc.Client.call(Client.java:854) - locked <0x00002aaacee6bc38>
(a org.apache.hadoop.ipc.Client$Call)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:223)
> at $Proxy2.getBlockLocations(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
> at $Proxy2.getBlockLocations(Unknown Source)
> at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:333)
> at org.apache.hadoop.hdfs.DFSClient.access$2(DFSClient.java:330)
> at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.getBlockAt(DFSClient.java:1606) 
> - locked <0x00002aaacecb8258> (a org.apache.hadoop.hdfs.DFSClient$DFSInputStream)
> at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.blockSeekTo(DFSClient.java:1704)
> - locked <0x00002aaacecb8258> (a org.apache.hadoop.hdfs.DFSClient$DFSInputStream)
> at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:1856)
> - locked <0x00002aaacecb8258> (a org.apache.hadoop.hdfs.DFSClient$DFSInputStream)
> at java.io.DataInputStream.readFully(DataInputStream.java:178)
> at org.apache.hadoop.io.DataOutputBuffer$Buffer.write(DataOutputBuffer.java:63)
> at org.apache.hadoop.io.DataOutputBuffer.write(DataOutputBuffer.java:101)
> at org.apache.hadoop.io.UTF8.readChars(UTF8.java:211)
> - locked <0x00002aaab3eaee50> (a org.apache.hadoop.io.DataOutputBuffer)
> at org.apache.hadoop.io.UTF8.readString(UTF8.java:203)
> at org.apache.hadoop.mapred.FileSplit.readFields(FileSplit.java:90)
> at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:67)
> at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:1)
> at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:341)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:357)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:317)
> at org.apache.hadoop.mapred.Child$4.run(Child.java:211)
> 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:700)
> at org.apache.hadoop.mapred.Child.main(Child.java:205)

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