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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4949) Centralized cache management in HDFS
Date Fri, 25 Oct 2013 04:42:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805021#comment-13805021
] 

Hadoop QA commented on HDFS-4949:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12610221/HDFS-4949-consolidated.patch
  against trunk revision .

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

    {color:green}+1 tests included{color}.  The patch appears to include 30 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 1551 javac compiler warnings
(more than the trunk's current 1548 warnings).

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

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

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

        {color:red}-1 release audit{color}.  The applied patch generated 1 release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common
hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.tools.offlineEditsViewer.TestOfflineEditsViewer

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Javac warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//artifact/trunk/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5273//console

This message is automatically generated.

> Centralized cache management in HDFS
> ------------------------------------
>
>                 Key: HDFS-4949
>                 URL: https://issues.apache.org/jira/browse/HDFS-4949
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, namenode
>    Affects Versions: 3.0.0, 2.3.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>         Attachments: caching-design-doc-2013-07-02.pdf, caching-design-doc-2013-08-09.pdf,
caching-design-doc-2013-10-24.pdf, caching-testplan.pdf, HDFS-4949-consolidated.patch
>
>
> HDFS currently has no support for managing or exposing in-memory caches at datanodes.
This makes it harder for higher level application frameworks like Hive, Pig, and Impala to
effectively use cluster memory, because they cannot explicitly cache important datasets or
place their tasks for memory locality.



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