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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10835) DBE encode path improvements
Date Tue, 15 Apr 2014 07:17:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13969290#comment-13969290
] 

Hadoop QA commented on HBASE-10835:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12640204/HBASE-10835.patch
  against trunk revision .
  ATTACHMENT ID: 12640204

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 18 new or modified
tests.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 lineLengths{color}.  The patch introduces the following lines longer than
100:
    +    HFileBlockDefaultEncodingContext encodingCtx = (HFileBlockDefaultEncodingContext)
blkEncodingCtx;
+    List<DataBlockEncoder.EncodedSeeker> encodedSeekers = new ArrayList<DataBlockEncoder.EncodedSeeker>();
+        HFileDataBlockEncoder dbe = (diskAlgo == DataBlockEncoding.NONE) ? NoOpDataBlockEncoder.INSTANCE

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat2
                  org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat

     {color:red}-1 core zombie tests{color}.  There are 1 zombie test(s): 	at org.apache.hadoop.hbase.mapreduce.TestMultiTableInputFormat.testScan(TestMultiTableInputFormat.java:244)
	at org.apache.hadoop.hbase.mapreduce.TestMultiTableInputFormat.testScanYZYToEmpty(TestMultiTableInputFormat.java:195)

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/9288//console

This message is automatically generated.

> DBE encode path improvements
> ----------------------------
>
>                 Key: HBASE-10835
>                 URL: https://issues.apache.org/jira/browse/HBASE-10835
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.99.0
>
>         Attachments: HBASE-10835.patch
>
>
> Here 1st we write KVs (Cells) into a buffer and then passed to DBE encoder. Encoder again
reads kvs one by one from the buffer and encodes and creates a new buffer.
> There is no need to have this model now. Previously we had option of no encode in disk
and encode only in cache. At that time the read buffer from a HFile block was passed to this
and encodes.
> So encode cell by cell can be done now. Making this change will need us to have a NoOp
DBE impl which just do the write of a cell as it is with out any encoding.



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