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https://issues.apache.org/jira/browse/CRAIL-48?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16558151#comment-16558151
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Patrick Stuedi commented on CRAIL-48:
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This is a good idea. It might be best to implement this as a new group
extension in DiSNI that overloads the CQProcessor in this way.
> Make namenode polling dynamic
> -----------------------------
>
> Key: CRAIL-48
> URL: https://issues.apache.org/jira/browse/CRAIL-48
> Project: Apache Crail
> Issue Type: Improvement
> Reporter: Animesh Trivedi
> Priority: Minor
>
> When the crail namenode is started with polling mode for RPCs, it stays
> there. May be we can add a timeout (along the lines : 30mins) for
> no-activity. When the no-activity timer expires, the namenode can go back to
> the blocking mode. As soon as the first request comes in, it can switch back
> again to the polling mode. This functionality can also be added using the
> ioctl interface.
> This is helpful for running a crail cluster with data for long periods of
> time. Otherwise CPU cores are hammered for days and nights.
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