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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5521) Move compression/decompression to an encoder specific encoding context
Date Thu, 08 Mar 2012 02:04:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13224935#comment-13224935
] 

Hadoop QA commented on HBASE-5521:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12517499/HBASE-5521.D2097.5.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 12 new or modified tests.

    -1 javadoc.  The javadoc tool appears to have generated -127 warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 158 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.regionserver.TestAtomicOperation
                  org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat
                  org.apache.hadoop.hbase.mapred.TestTableMapReduce
                  org.apache.hadoop.hbase.mapreduce.TestImportTsv

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/1129//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/1129//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1129//console

This message is automatically generated.
                
> Move compression/decompression to an encoder specific encoding context
> ----------------------------------------------------------------------
>
>                 Key: HBASE-5521
>                 URL: https://issues.apache.org/jira/browse/HBASE-5521
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>         Attachments: HBASE-5521.1.patch, HBASE-5521.D2097.1.patch, HBASE-5521.D2097.2.patch,
HBASE-5521.D2097.3.patch, HBASE-5521.D2097.4.patch, HBASE-5521.D2097.5.patch
>
>
> As part of working on HBASE-5313, we want to add a new columnar encoder/decoder. It makes
sense to move compression to be part of encoder/decoder:
> 1) a scanner for a columnar encoded block can do lazy decompression to a specific part
of a key value object
> 2) avoid an extra bytes copy from encoder to hblock-writer. 
> If there is no encoder specified for a writer, the HBlock.Writer will use a default compression-context
to do something very similar to today's code.

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