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https://issues.apache.org/jira/browse/HADOOP-1328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sameer Paranjpye updated HADOOP-1328:
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Component/s: contrib/streaming
Assignee: Owen O'Malley
Description:
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.
was:
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.
> 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
> Issue Type: New Feature
> Components: contrib/streaming
> Reporter: Runping Qi
> Assigned To: Owen O'Malley
>
> 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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