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From "zhaoyunjiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7759) Provide existence-of-a-second-file implementation for pinning blocks on Datanode
Date Fri, 13 Feb 2015 05:14:11 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

zhaoyunjiong updated HDFS-7759:
-------------------------------
    Attachment: HDFS-7759.patch

I'll add more unit test and check the logic for upgrade and finalizeUpgrade two weeks later.

> Provide existence-of-a-second-file implementation for pinning blocks on Datanode
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-7759
>                 URL: https://issues.apache.org/jira/browse/HDFS-7759
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: zhaoyunjiong
>            Assignee: zhaoyunjiong
>         Attachments: HDFS-7759.patch
>
>
> Provide existence-of-a-second-file implementation for pinning blocks on Datanode  and
let admin choosing the mechanism(use sticky bit or existence-of-a-second-file) to pinning
blocks on favored Datanode.



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