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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13754) Allow non KeyValue Cell types also to oswrite
Date Sat, 23 May 2015 10:46:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14557274#comment-14557274
] 

Hadoop QA commented on HBASE-13754:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12734999/HBASE-13754.patch
  against master branch at commit e93e1ea73c6ce5f632636c613068ddd877ebb60d.
  ATTACHMENT ID: 12734999

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.1 2.5.2 2.6.0)

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

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

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

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

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

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

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/14159//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/14159//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/14159//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/14159//console

This message is automatically generated.

> Allow non KeyValue Cell types also to oswrite
> ---------------------------------------------
>
>                 Key: HBASE-13754
>                 URL: https://issues.apache.org/jira/browse/HBASE-13754
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Scanners
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>         Attachments: HBASE-13754.patch
>
>
> While making the cellblock for returning data to client, we have to write the cell data
into an OutputStream. KeyValue has a static oswrite() method with which it can write data
in one go. (KeyValue components are in a single byte[]). For other cell implementation, we
will call getXXXLength() and getXXXArray() and write each component one after the other. This
is not efficient as the KeyValue way. In fact other cell impls also may have one contigous
byte[] backing for keys atleast. (See ClonedSeekerState) We can optimize for such Cells also.



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