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From "Andrey Stepachev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3689) Add support for variable length block
Date Wed, 20 Aug 2014 20:43:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14104539#comment-14104539
] 

Andrey Stepachev commented on HDFS-3689:
----------------------------------------

[~jingzhao] of course they should. Sparse property should be maintained in metadata (i think).
That gives an opportunity to handle sparse files right from client (generate zeros right in
the client code with no data passed)

> 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: Suresh Srinivas
>         Attachments: HDFS-3689.000.patch, HDFS-3689.001.patch
>
>
> 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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