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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6944) Archival Storage: add a test framework for testing different migration scenarios
Date Wed, 27 Aug 2014 03:38:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-6944:
----------------------------

    Attachment: HDFS-6944.001.patch

Update the patch:
# Now for a pendingMove, a target may be scheduled to the same DataNode of an existing replica.
This is because we currently use MovedBlocks.Locations#isLocatedOn, which compares StorageGroup
instances. Then when we do the data migration the DN actually may complain that it already
has a replica and fail the migration. A fix here can be doing comparison based on StorageGroup#getDataNodeInfo().
# Currently the Mover cannot terminate since Mover#run always returns IN_PROGRESS. The patch
adds code to wait for the existing migration finish, and also adds a simple termination condition.

> Archival Storage: add a test framework for testing different migration scenarios
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-6944
>                 URL: https://issues.apache.org/jira/browse/HDFS-6944
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: balancer, namenode
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-6944.000.patch, HDFS-6944.001.patch
>
>
> This jira plans to add a testing framework for testing different scenarios of data migration.



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