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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3689) Add support for variable length block
Date Thu, 12 Feb 2015 00:07:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317248#comment-14317248
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Suresh Srinivas commented on HDFS-3689:
---------------------------------------

[~jingzhao], can you please add a release note on how one uses this feature. Also do you think
we need to have fsck output to say what files have variable length block? Finally, should
we now change the concat implementation to be more flexible based on this feature?

> Add support for variable length block
> -------------------------------------
>
>                 Key: HDFS-3689
>                 URL: https://issues.apache.org/jira/browse/HDFS-3689
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, hdfs-client, namenode
>    Affects Versions: 3.0.0
>            Reporter: Suresh Srinivas
>            Assignee: Jing Zhao
>             Fix For: 3.0.0
>
>         Attachments: HDFS-3689.000.patch, HDFS-3689.001.patch, HDFS-3689.002.patch, HDFS-3689.003.patch,
HDFS-3689.003.patch, HDFS-3689.004.patch, HDFS-3689.005.patch, HDFS-3689.006.patch, HDFS-3689.007.patch,
HDFS-3689.008.patch, HDFS-3689.008.patch, HDFS-3689.009.patch, HDFS-3689.009.patch, HDFS-3689.010.patch,
HDFS-3689.branch-2.patch, editsStored
>
>
> Currently HDFS supports fixed length blocks. Supporting variable length block will allow
new use cases and features to be built on top of HDFS. 



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