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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11029) [SPS]:Provide retry mechanism for the blocks which were failed while moving its storage at DNs
Date Tue, 08 Nov 2016 03:28:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uma Maheswara Rao G updated HDFS-11029:
---------------------------------------
    Status: Patch Available  (was: Open)

> [SPS]:Provide retry mechanism for the blocks which were failed while moving its storage
at DNs
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-11029
>                 URL: https://issues.apache.org/jira/browse/HDFS-11029
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: HDFS-10285
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>         Attachments: HDFS-11029-HDFS-10285-00.patch
>
>
> When DN co-ordinator finds some of blocks associated to trackedID could not be moved
its storages, due to some errors.Here retry may work in some cases, example if target node
has no space. Then retry by finding another target can work. 
> So, based on the movement result flag(SUCCESS/FAILURE) from DN Co-ordinator,  NN would
retry by scanning the blocks again.



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