[
https://issues.apache.org/jira/browse/MAPREDUCE-1305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12794068#action_12794068
]
Hadoop QA commented on MAPREDUCE-1305:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12428316/MAPREDUCE-1305.patch
against trunk revision 893469.
+1 @author. The patch does not contain any @author tags.
-1 tests included. 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.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
-1 contrib tests. The patch failed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/241/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/241/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/241/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/241/console
This message is automatically generated.
> Massive performance problem with DistCp and -delete
> ---------------------------------------------------
>
> Key: MAPREDUCE-1305
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1305
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: distcp
> Affects Versions: 0.20.1
> Reporter: Peter Romianowski
> Assignee: Peter Romianowski
> Attachments: MAPREDUCE-1305.patch
>
>
> *First problem*
> In org.apache.hadoop.tools.DistCp#deleteNonexisting we serialize FileStatus
> objects when the path is all we need.
> The performance problem comes from
> org.apache.hadoop.fs.RawLocalFileSystem.RawLocalFileStatus#write which tries
> to retrieve file permissions by issuing a "ls -ld <path>" which is painfully
> slow.
> Changed that to just serialize Path and not FileStatus.
> *Second problem*
> To delete the files we invoke the "hadoop" command line tool with option
> "-rmr <path>". Again, for each file.
> Changed that to dstfs.delete(path, true)
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
