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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2971) SocketTimeoutException in unit tests
Date Wed, 12 Mar 2008 12:18:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12577826#action_12577826
] 

Hudson commented on HADOOP-2971:
--------------------------------

Integrated in Hadoop-trunk #426 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/426/])

> SocketTimeoutException in unit tests
> ------------------------------------
>
>                 Key: HADOOP-2971
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2971
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.17.0
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-2971.patch, HADOOP-2971.patch
>
>
> TestJobStatusPersistency failed and contained DataNode stacktraces similar to the following
:
> {noformat}
> 2008-03-07 21:27:00,410 ERROR dfs.DataNode (DataNode.java:run(976)) - 127.0.0.1:57790:DataXceiver:
java.net.SocketTimeoutException: 0 millis 
> timeout while waiting for Unknown Addr (local: /127.0.0.1:57790) to be ready for read
>         at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:188)
>         at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:135)
>         at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:121)
>         at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
>         at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
>         at java.io.DataInputStream.readInt(DataInputStream.java:370)
>         at org.apache.hadoop.dfs.DataNode$BlockReceiver.receiveBlock(DataNode.java:2434)
>         at org.apache.hadoop.dfs.DataNode$DataXceiver.writeBlock(DataNode.java:1170)
>         at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:953)
>         at java.lang.Thread.run(Thread.java:619)
> {noformat}
> This is mostly related to HADOOP-2346. The error is strange. socket.getRemoteSocketAddress()
returned null implying this socket is not connected yet. But we have already read a few bytes
from it!.

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