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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1328) Hadoop Streaming needs to provide a way for the stream plugin to update global counters
Date Wed, 04 Jun 2008 20:22:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HADOOP-1328:
----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.18.0
           Status: Resolved  (was: Patch Available)

I just committed this. Thanks, Tom!

> Hadoop Streaming needs to provide a way for the stream plugin to update global counters
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1328
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1328
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/streaming
>            Reporter: Runping Qi
>            Assignee: Tom White
>             Fix For: 0.18.0
>
>         Attachments: hadoop-1328-v2.patch, hadoop-1328-v3.patch, hadoop-1328-v4.patch,
hadoop-1328-v5.patch, hadoop-1328.patch
>
>
> Sometimes, the stream plugin may want to create/update its own global counters.
> There is no way to do so currently.
> One possible way to enable that is to use the stderr output of the stream process.
> The stream process can emit the global counter update information (such as GLOCAL_COUNTER
COUNTER_NAME NUM)
> to the stderr of the process. The Stderr handling thread can call the global counter
API whenever it encounters the global counter update information line.

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