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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5907) Handle block deletion requests during rolling upgrades
Date Wed, 12 Feb 2014 04:43:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal updated HDFS-5907:
--------------------------------

    Attachment: HDFS-5907.02.patch

Updated patch to add DN startup option for rollback. Verified manually, need to add unit test.

> 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
>
>
> Jira to track the following:
> # During a rolling upgrade the DataNode should handle block deletions by creating hard
links to the block files.
> # Files must be restored during a rollback.
> # Cleanup hard links during finalize.



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