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https://issues.apache.org/jira/browse/HDFS-3342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yongjun Zhang updated HDFS-3342:
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Attachment: HDFS-3342.001.patch
> SocketTimeoutException in BlockSender.sendChunks could have a better error
> message
> ----------------------------------------------------------------------------------
>
> Key: HDFS-3342
> URL: https://issues.apache.org/jira/browse/HDFS-3342
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.0.0-alpha
> Reporter: Todd Lipcon
> Assignee: Yongjun Zhang
> Priority: Minor
> Attachments: HDFS-3342.001.patch
>
>
> Currently, if a client connects to a DN and begins to read a block, but then
> stops calling read() for a long period of time, the DN will log a
> SocketTimeoutException "480000 millis timeout while waiting for channel to be
> ready for write." This is because there is no "keepalive" functionality of
> any kind. At a minimum, we should improve this error message to be an INFO
> level log which just says that the client likely stopped reading, so
> disconnecting it.
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