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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1328) Hadoop Streaming needs to provide a way for the stream plugin to update global counters
Date Fri, 04 May 2007 21:37:15 GMT
Hadoop Streaming needs to provide a way for the stream plugin to update global counters
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                 Key: HADOOP-1328
                 URL: https://issues.apache.org/jira/browse/HADOOP-1328
             Project: Hadoop
          Issue Type: New Feature
            Reporter: Runping Qi



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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