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From "Henry Robinson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3110) libhdfs implementation of direct read API
Date Sat, 31 Mar 2012 21:44:26 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13243300#comment-13243300
] 

Henry Robinson commented on HDFS-3110:
--------------------------------------

Fyi, I've added tests, but when I run with the libhdfs test script I get instances of ChecksumFileSystem
back which are no good for this case because they don't support the read(ByteBuffer) interface.
So I've added a class to HDFS-3167 that allows us to spin up a simple cluster for correctness
testing very easily, and if that goes in I'll be able to update the test script accordingly.
                
> libhdfs implementation of direct read API
> -----------------------------------------
>
>                 Key: HDFS-3110
>                 URL: https://issues.apache.org/jira/browse/HDFS-3110
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: libhdfs
>            Reporter: Henry Robinson
>            Assignee: Henry Robinson
>             Fix For: 0.24.0
>
>         Attachments: HDFS-3110.0.patch
>
>
> Once HDFS-2834 gets committed, we can add support for the new API to libhdfs, which leads
to significant performance increases when reading local data from C.

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