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Posted to hdfs-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2013/10/05 07:25:41 UTC

[jira] [Updated] (HDFS-5304) Expose if a block replica is cached in getFileBlockLocations

     [ https://issues.apache.org/jira/browse/HDFS-5304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wang updated HDFS-5304:
------------------------------

    Attachment: hdfs-5304-1.patch

Patch attached, wasn't that bad. Added a boolean array to {{LocatedBlock}} which indicates if the location at the same index is cached. Added new checks to an existing test to validate.

> Expose if a block replica is cached in getFileBlockLocations
> ------------------------------------------------------------
>
>                 Key: HDFS-5304
>                 URL: https://issues.apache.org/jira/browse/HDFS-5304
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: HDFS-4949
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>         Attachments: hdfs-5304-1.patch
>
>
> We need to expose which replicas of a block are cached so applications can place their tasks for memory-locality.



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