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https://issues.apache.org/jira/browse/HADOOP-3429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HADOOP-3429:
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Resolution: Fixed
Release Note: Increases the size of the buffersize used in the
communication between the Java task and the Streaming process to 128K. Gives
performance improvements.
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
I just committed this. Thanks, Amareshwari!
> Increase the buffersize for the streaming parent java process's streams
> -----------------------------------------------------------------------
>
> Key: HADOOP-3429
> URL: https://issues.apache.org/jira/browse/HADOOP-3429
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/streaming
> Reporter: Devaraj Das
> Assignee: Amareshwari Sriramadasu
> Fix For: 0.18.0
>
> Attachments: patch-3429.txt
>
>
> We saw improved performance when we increased the buffersize for Pipes
> (HADOOP-1788). In the streaming case, the buffersize is 8K (default for
> BufferedOutputStream). We should set that to 128k.
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