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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7437) Storing block ids instead of BlockInfo object in INodeFile
Date Wed, 26 Nov 2014 22:04:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14226864#comment-14226864
] 

Hadoop QA commented on HDFS-7437:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12683891/HDFS-7437.001.patch
  against trunk revision 978736d.

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

    {color:green}+1 tests included{color}.  The patch appears to include 5 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  There were no new javadoc 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
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 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8850//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8850//console

This message is automatically generated.

> Storing block ids instead of BlockInfo object in INodeFile
> ----------------------------------------------------------
>
>                 Key: HDFS-7437
>                 URL: https://issues.apache.org/jira/browse/HDFS-7437
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>         Attachments: HDFS-7437.000.patch, HDFS-7437.001.patch
>
>
> Currently {{INodeFile}} stores the lists of blocks as references of {{BlockInfo}} instead
of the block ids. This creates implicit dependency between the namespace and the block manager.
> The dependency blocks several recent efforts, such as separating the block manager out
as a standalone service, moving block information off heap, and optimizing the memory usage
of block manager.
> This jira proposes to decouple the dependency by storing block ids instead of object
reference in {{INodeFile}} objects.



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