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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11331) [blockcache] lazy block decompression
Date Wed, 11 Jun 2014 22:39:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14028512#comment-14028512
] 

Hadoop QA commented on HBASE-11331:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12649880/HBASE-11331.00.patch
  against trunk revision .
  ATTACHMENT ID: 12649880

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

    {color:green}+1 tests included{color}.  The patch appears to include 24 new or modified
tests.

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

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

    {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: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:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.io.encoding.TestLoadAndSwitchEncodeOnDisk
                  org.apache.hadoop.hbase.io.hfile.TestCacheOnWrite
                  org.apache.hadoop.hbase.regionserver.TestMultiColumnScanner
                  org.apache.hadoop.hbase.io.hfile.TestHFileBlock

     {color:red}-1 core zombie tests{color}.  There are 1 zombie test(s): 	at org.apache.hadoop.hbase.regionserver.TestHRegion.testWritesWhileGetting(TestHRegion.java:3499)

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/9747//console

This message is automatically generated.

> [blockcache] lazy block decompression
> -------------------------------------
>
>                 Key: HBASE-11331
>                 URL: https://issues.apache.org/jira/browse/HBASE-11331
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>         Attachments: HBASE-11331.00.patch
>
>
> Maintaining data in its compressed form in the block cache will greatly increase our
effective blockcache size and should show a meaning improvement in cache hit rates in well
designed applications. The idea here is to lazily decompress/decrypt blocks when they're consumed,
rather than as soon as they're pulled off of disk.
> This is related to but less invasive than HBASE-8894.



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