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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3704) In the DFSClient, Add the node to the dead list when the ipc.Client calls fails
Date Tue, 23 Oct 2012 11:03:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13482259#comment-13482259
] 

Hadoop QA commented on HDFS-3704:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12550438/HADOOP-3704.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3386//console

This message is automatically generated.
                
> In the DFSClient, Add the node to the dead list when the ipc.Client calls fails
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-3704
>                 URL: https://issues.apache.org/jira/browse/HDFS-3704
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 1.0.3, 2.0.0-alpha
>            Reporter: nkeywal
>            Priority: Minor
>         Attachments: HADOOP-3704.patch
>
>
> The DFSCLient maintains a list of dead node per input steam. When creating this DFSInputStream,
it may connect to one of the nodes to check final block size. If this call fail, this datanode
should be put in the dead nodes list to save time. If not it will be retried for the block
transfer during the read, and we're likely to get a timeout.

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