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From "Harsh J Chouraria (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-1120) Make DataNode's block-to-device placement policy pluggable
Date Sat, 26 Mar 2011 06:10:05 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J Chouraria updated HDFS-1120:
------------------------------------

    Attachment: HDFS-1120.r1.diff

Attached a patch that refactors the round-robin default choosing mechanism to something more
pluggable via a defined public interface and a datanode configurable option.

> Make DataNode's block-to-device placement policy pluggable
> ----------------------------------------------------------
>
>                 Key: HDFS-1120
>                 URL: https://issues.apache.org/jira/browse/HDFS-1120
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node
>            Reporter: Jeff Hammerbacher
>            Assignee: Harsh J Chouraria
>         Attachments: HDFS-1120.r1.diff
>
>
> As discussed on the mailing list, as the number of disk drives per server increases,
it would be useful to allow the DataNode's policy for new block placement to grow in sophistication
from the current round-robin strategy.

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