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https://issues.apache.org/jira/browse/HADOOP-10233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe resolved HADOOP-10233.
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Resolution: Duplicate
> RPC lacks output flow control
> -----------------------------
>
> Key: HADOOP-10233
> URL: https://issues.apache.org/jira/browse/HADOOP-10233
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Affects Versions: 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Priority: Critical
>
> The RPC layer has input flow control via the callq, however it lacks any
> output flow control. A handler will try to directly send the response. If
> the full response is not sent then it is queued for the background responder
> thread. The RPC layer may end up queuing so many buffers that it "locks" up
> in GC.
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