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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-1804) Modify or add a new block-volume device choosing policy that looks at free space
Date Fri, 05 Apr 2013 07:58:15 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aaron T. Myers updated HDFS-1804:

    Attachment: HDFS-1804.patch

Thanks a lot for the review, Chris. Here's a patch which should address all of your comments
except the first one. Let's leave that for another JIRA if we find that people are concerned
with such a thing.

This latest patch should also address the findbugs warning which was, again, spurious.
> Modify or add a new block-volume device choosing policy that looks at free space
> --------------------------------------------------------------------------------
>                 Key: HDFS-1804
>                 URL: https://issues.apache.org/jira/browse/HDFS-1804
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Harsh J
>            Assignee: Aaron T. Myers
>            Priority: Minor
>         Attachments: HDFS-1804.patch, HDFS-1804.patch, HDFS-1804.patch, HDFS-1804.patch,
> HDFS-1120 introduced pluggable block-volume choosing policies, but still carries the
vanilla RoundRobin as its default.
> An additional implementation that also takes into consideration the free space remaining
on the disk (or other params) should be a good addition as an alternative to vanilla RR.

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