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Posted to common-issues@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2009/07/08 20:43:14 UTC

[jira] Updated: (HADOOP-6099) Allow configuring the IPC module to send pings

     [ https://issues.apache.org/jira/browse/HADOOP-6099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur updated HADOOP-6099:
-------------------------------------

    Attachment: ipcPing2.txt

Thanks for the review Konstantin. I also attached a unit test.

> 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
>         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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