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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6099) Allow configuring the IPC module to send pings
Date Wed, 08 Jul 2009 20:41:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728892#action_12728892

dhruba borthakur commented on HADOOP-6099:

The core test failed beucase of this reason

Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
     [exec] /usr/bin/kill -9 22462 
     [exec] /usr/bin/xargs: /usr/bin/kill: No such file or directory
     [exec] /home/hudson/tools/ant/latest/bin/ant -Dversion=791937_HADOOP-6099_PATCH-12412894
-DHadoopPatchProcess= -Dtest.junit.output.format=xml -Dtest.output=yes -Dcompile.c++=yes -Dforrest.home=/home/nigel/tools/forrest/latest
-Djava5.home=/home/hudson/tools/java/latest1.5 create-c++-configure test-core
     [exec] Buildfile: build.xml
     [exec] BUILD FAILED
     [exec] Target "create-c++-configure" d

Is this a problem with the HadoopQA framework?

> Allow configuring the IPC module to send pings
> ----------------------------------------------
>                 Key: HADOOP-6099
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6099
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.21.0
>         Attachments: ipcPing.txt, ipcPing2.txt
> The IPC Client sets a socketTimeout for the time period specified by the pingInterval
and then sends a ping every pingInterval. This means that if a RPC server does not respond
to a RPC client, then the RPC client blocks forever. This is a problem for applications that
wants to switch quickly from one un-responsive HDFS cluster  to a good one. 

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