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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-6991) Notify NN of evicted block before deleting it from RAM disk
Date Mon, 08 Sep 2014 21:30:30 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal resolved HDFS-6991.
---------------------------------
       Resolution: Fixed
    Fix Version/s: HDFS-6581
     Hadoop Flags: Reviewed

Thanks for the reviews [~xyao] and [~jnp]! I committed it to the feature branch.

> Notify NN of evicted block before deleting it from RAM disk
> -----------------------------------------------------------
>
>                 Key: HDFS-6991
>                 URL: https://issues.apache.org/jira/browse/HDFS-6991
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>    Affects Versions: HDFS-6581
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>             Fix For: HDFS-6581
>
>         Attachments: HDFS-6991.01.patch, HDFS-6991.02.patch, HDFS-6991.03.patch
>
>
> Couple of bug fixes required around eviction:
> # When evicting a block from RAM disk to persistent storage, the DN should schedule an
incremental block report for a 'received' replica on persistent storage.
> # {{BlockManager.processReportedBlock}} needs a fix to correctly update the storage ID
to reflect the block moving from RAM_DISK to DISK.
> Found by [~xyao] via HDFS-6950.



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