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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5907) Handle block deletion requests during rolling upgrades
Date Thu, 13 Feb 2014 00:27:26 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13899831#comment-13899831
] 

Suresh Srinivas commented on HDFS-5907:
---------------------------------------

[~arpitagarwal], thanks for addressing the comments. The current version of the patch looks
good. I will review the newer patch, once you add E2E tests.

> Handle block deletion requests during rolling upgrades
> ------------------------------------------------------
>
>                 Key: HDFS-5907
>                 URL: https://issues.apache.org/jira/browse/HDFS-5907
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: HDFS-5535 (Rolling upgrades)
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-5907.01.patch, HDFS-5907.02.patch, HDFS-5907.04.patch
>
>
> DN changes when a rolling upgrade is in progress:
> # DataNode should handle block deletions by moving block files to 'trash'.
> # Block files should be restored to their original locations during a rollback.
> # Purge trash when the rolling upgrade is finalized.



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