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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 04:53:19 GMT

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

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

    Description: 
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 during finalize.

  was:
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.


> 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
>
>
> 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 during finalize.



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