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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 Wed, 09 Nov 2016 22:28:58 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:
    Attachment: HDFS-11029-HDFS-10285-01.patch

Thank you so much, [~rakeshr] for the quick reviews. Here is the patch which addresses the
comments except #2. For #2, I will make them configurable later along with other parameters
in other JIRA. If you notice I already added a TODO. Thanks

> [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, HDFS-11029-HDFS-10285-01.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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