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https://issues.apache.org/jira/browse/HDFS-693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12875630#action_12875630
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Jeff Whiting commented on HDFS-693:
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For what it is worth I've been seeing the same problem on 0.20.2. Specifically
the java.net.SocketTimeoutException: 480000 millis timeout while waiting for
channel to be ready for write. ch error.
> java.net.SocketTimeoutException: 480000 millis timeout while waiting for
> channel to be ready for write exceptions were cast when trying to read file
> via StreamFile.
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-693
> URL: https://issues.apache.org/jira/browse/HDFS-693
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 0.20.1
> Reporter: Yajun Dong
> Attachments: HDFS-693.log
>
>
> To exclude the case of network problem, I found the count of dataXceiver is
> about 30. Also, I could see the output of netstate -a | grep 50075 has many
> TIME_WAIT status when this happened.
> partial log in attachment.
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