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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7657) Add support for LZ4 compression
Date Sun, 18 Dec 2011 12:42:32 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171855#comment-13171855
] 

Hudson commented on HADOOP-7657:
--------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #111 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/111/])
    Amend previous commit of HADOOP-7657 (LZ4 compression). Fix a mistaken #include
HADOOP-7657. Add support for LZ4 compression. Contributed by Binglin Chang.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1220313
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/compress/lz4/lz4.c

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1220312
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/LICENSE.txt
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/pom.xml
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/Lz4Codec.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/lz4
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/lz4/Lz4Compressor.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/lz4/Lz4Decompressor.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/lz4/package-info.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/Makefile.am
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/compress/lz4
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/compress/lz4/Lz4Compressor.c
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/compress/lz4/Lz4Decompressor.c
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/compress/lz4/lz4.c
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/compress/TestCodec.java

                
> Add support for LZ4 compression
> -------------------------------
>
>                 Key: HADOOP-7657
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7657
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Mr Bsd
>            Assignee: Binglin Chang
>              Labels: compression
>             Fix For: 0.24.0, 0.23.1
>
>         Attachments: HADOOP-7657.lz4.v1.patch, HADOOP-7657.lz4.v2.patch, hadoop-7657.v3.txt
>
>
> According to several benchmark sites, LZ4 seems to overtake other fast compression algorithms,
especially in the decompression speed area. The interface is also trivial to integrate (http://code.google.com/p/lz4/source/browse/trunk/lz4.h)
and there is no license issue.

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