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https://issues.apache.org/jira/browse/GIRAPH-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082170#comment-14082170
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Craig Muchinsky commented on GIRAPH-927:
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I was able to verify that the async.patch corrected the task shutdown issue.
> Decouple netty server threads from message processing
> -----------------------------------------------------
>
> Key: GIRAPH-927
> URL: https://issues.apache.org/jira/browse/GIRAPH-927
> Project: Giraph
> Issue Type: Improvement
> Reporter: Sergey Edunov
> Attachments: GIRAPH-927.patch, async.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Our profiling shows that a lot of apps are neither CPU nor memory or network
> bound. Instead they waste a lot of time waiting for lock in MessageStore.
> That happens in netty threads.
> We should be able to put messages into queue and then process them in other
> set of threads.
> It has to be configurable because adding another thread level will introduce
> additional overhead.
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