[ https://issues.apache.org/jira/browse/HADOOP-1328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tom White updated HADOOP-1328:
------------------------------
Status: Patch Available (was: Open)
> 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
> 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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