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https://issues.apache.org/jira/browse/HADOOP-6768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868499#action_12868499
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Lin Yang commented on HADOOP-6768:
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又看见师兄提bug了...
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杨林
http://blog.csdn.net/idning
> RPC client can response more efficiently when sendParam() got IOException
> -------------------------------------------------------------------------
>
> Key: HADOOP-6768
> URL: https://issues.apache.org/jira/browse/HADOOP-6768
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.22.0
> Reporter: Xiao Kang
> Fix For: 0.22.0
>
>
> Under current RPC client implementation, when Client.Connection.sendParam()
> encounters IOException it just marks the exception and wait receiveResponse()
> thread to handle the exception. However, receiveResponse() may block
> ipc.ping.interval on socket read().
> This means that RPC client may wait ipc.ping.interval(typically 1 miniute)
> when exception in sendParam().
> It maybe not so reasonable in some situation. For example using "hadoop fs
> -put " a small file, DFSClient.close() will interupt renewLease() thread and
> it may wait 1 minute.
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