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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11827) Speed-up distcp buildListing() using threadpool
Date Tue, 21 Apr 2015 19:55:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505612#comment-14505612
] 

Hadoop QA commented on HADOOP-11827:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12726960/HADOOP-11827-04.patch
  against trunk revision 997408e.

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

    {color:green}+1 tests included{color}.  The patch appears to include 4 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-tools/hadoop-distcp.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/6140//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/6140//console

This message is automatically generated.

> Speed-up distcp buildListing() using threadpool
> -----------------------------------------------
>
>                 Key: HADOOP-11827
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11827
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: tools/distcp
>    Affects Versions: 2.7.0, 2.7.1
>            Reporter: Zoran Dimitrijevic
>            Assignee: Zoran Dimitrijevic
>         Attachments: HADOOP-11827-02.patch, HADOOP-11827-03.patch, HADOOP-11827-04.patch,
HADOOP-11827.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> For very large source trees on s3 distcp is taking long time to build file listing (client
code, before starting mappers). For a dataset I used (1.5M files, 50K dirs) it was taking
65 minutes before my fix in HADOOP-11785 and 36 minutes after the fix).



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