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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-6926) DN support for saving replicas to persistent storage and evicting in-memory replicas
Date Wed, 27 Aug 2014 22:52:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal resolved HDFS-6926.
---------------------------------

      Resolution: Fixed
    Hadoop Flags: Reviewed

Thanks Jitendra! Committed to feature branch.

> DN support for saving replicas to persistent storage and evicting in-memory replicas
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-6926
>                 URL: https://issues.apache.org/jira/browse/HDFS-6926
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: HDFS-6581
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-6926.01.patch
>
>
> Add the following:
> # A lazy writer on the DN to move replicas from RAM disk to persistent storage.
> # 'Evict' persisted replicas from RAM disk to make space for new blocks.



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