[jira] [Commented] (HADOOP-10047) Add a directbuffer Decompressor API to hadoop

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-10047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13815192#comment-13815192 ] 

Hadoop QA commented on HADOOP-10047:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12612419/decompress-benchmark.tgz
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/3268//console

This message is automatically generated.

> Add a directbuffer Decompressor API to hadoop
> ---------------------------------------------
>
>                 Key: HADOOP-10047
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10047
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>    Affects Versions: 2.3.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>              Labels: compression
>             Fix For: 3.0.0
>
>         Attachments: DirectCompressor.html, DirectDecompressor.html, HADOOP-10047-WIP.patch, HADOOP-10047-final.patch, HADOOP-10047-redo-WIP.patch, HADOOP-10047-trunk.patch, HADOOP-10047-with-tests.patch, decompress-benchmark.tgz
>
>
> With the Zero-Copy reads in HDFS (HDFS-5260), it becomes important to perform all I/O operations without copying data into byte[] buffers or other buffers which wrap over them.
> This is a proposal for adding a DirectDecompressor interface to the io.compress, to indicate codecs which want to surface the direct buffer layer upwards.
> The implementation should work with direct heap/mmap buffers and cannot assume .array() availability.



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