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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-693) 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.
Date Wed, 24 Oct 2012 14:46:14 GMT

     [ https://issues.apache.org/jira/browse/HDFS-693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J resolved HDFS-693.
--------------------------

    Resolution: Not A Problem

This issue has gone stale - resolving. The timeouts result from a variety of operations (i.e.
actual timeouts due to the client disappearing - tasks getting killed, etc., hitting transceiver
limits, etc.) - not due to a bug in HDFS. Or at least, not anymore.

Resolving as Not A Problem. Please file a new ticket if you are seeing unwanted timeouts on
healthy clients/environments/configuration.
                
> 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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