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Posted to hdfs-issues@hadoop.apache.org by "Rohit Kochar (JIRA)" <ji...@apache.org> on 2013/03/11 06:03:13 UTC

[jira] [Commented] (HDFS-4581) DataNode#checkDiskError should not be called on network errors

    [ https://issues.apache.org/jira/browse/HDFS-4581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598539#comment-13598539 ] 

Rohit Kochar commented on HDFS-4581:
------------------------------------

We are facing an issue in which most of checkDiskError() invocations are happening due to network related exceptions in BlockReciever$PacketResponder.run() and DataNode$DataTransfer.run().
Since the current code has a common catch clause for all types of exceptions hence even for network related IO Exceptions chedkDiskError() in executed which lead to check storm thereby slowing the datanode.
                
> DataNode#checkDiskError should not be called on network errors
> --------------------------------------------------------------
>
>                 Key: HDFS-4581
>                 URL: https://issues.apache.org/jira/browse/HDFS-4581
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Rohit Kochar
>


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