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https://issues.apache.org/jira/browse/HADOOP-2326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-2326:
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Attachment: asyncRPC-4.patch
This patch is in response to Doug's comments that we need to show improvement
in performance in the face of slow clients.
This patch has a unit test that creates a server with one handler thread. One
thread makes an RPC and stops processing the response. Another thread then
issues another RPC and it completes successfully even though the first thread
has not yet consumed the RPC response. This test passes successfully with this
patch whereas it fails with trunk.
Please let me know is it addresses your concerns. If so, then the only
remaining thing to make this patch committable is to demonstrate that it does
not degrade performance for sort runs.
> Add a Random backoff for the initial block report sent to the Name node
> -----------------------------------------------------------------------
>
> Key: HADOOP-2326
> URL: https://issues.apache.org/jira/browse/HADOOP-2326
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Reporter: Sanjay Radia
> Assignee: Sanjay Radia
> Fix For: 0.16.0
>
> Attachments: asyncRPC-4.patch
>
>
> Startup time can be improved if the initial block reports are spread randomly
> over small period of time.
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