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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1328) Hadoop Streaming needs to provide a way for the stream plugin to update global counters
Date Tue, 01 Apr 2008 10:42:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584101#action_12584101
] 

Amareshwari Sriramadasu commented on HADOOP-1328:
-------------------------------------------------

+1 

> 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: Christopher Zimmerman
>         Attachments: hadoop-1328-v2.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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