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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6247) Avoid timeouts for replaceBlock() call by sending intermediate responses to Balancer
Date Wed, 13 Aug 2014 18:10:14 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinayakumar B updated HDFS-6247:
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.6.0
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

> Avoid timeouts for replaceBlock() call by sending intermediate responses to Balancer
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-6247
>                 URL: https://issues.apache.org/jira/browse/HDFS-6247
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer, datanode
>    Affects Versions: 2.4.0
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>             Fix For: 2.6.0
>
>         Attachments: HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch,
HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch
>
>
> Currently there is no response sent from target Datanode to Balancer for the replaceBlock()
calls.
> Since the Block movement for balancing is throttled, complete block movement will take
time and this could result in timeout at Balancer, which will be trying to read the status
message.
>  
> To Avoid this during replaceBlock() call in in progress Datanode  can send IN_PROGRESS
status messages to Balancer to avoid timeouts and treat BlockMovement as  failed.



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