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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5848) Add rolling upgrade infomation to heartbeat response
Date Sat, 01 Feb 2014 00:34:10 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888356#comment-13888356
] 

Jing Zhao commented on HDFS-5848:
---------------------------------

+1 Patch looks good.

> Add rolling upgrade infomation to heartbeat response
> ----------------------------------------------------
>
>                 Key: HDFS-5848
>                 URL: https://issues.apache.org/jira/browse/HDFS-5848
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h5848_20130130.patch, h5848_20130130b.patch, h5848_20140131.patch
>
>
> When rolling upgrade is in progress, NN should inform datanodes via heartbeat responses
so that datanode should create hardlinks when deleting blocks.  We only change heartbeat response
here.  The datanode change will be done in a separated JIRA.



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