[
https://issues.apache.org/jira/browse/MAPREDUCE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13097018#comment-13097018
]
Hadoop QA commented on MAPREDUCE-2340:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12493002/MAPREDUCE-2340.r1.diff
against trunk revision .
+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 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/605//console
This message is automatically generated.
> optimize JobInProgress.initTasks()
> ----------------------------------
>
> Key: MAPREDUCE-2340
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2340
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Affects Versions: 0.20.1, 0.21.0
> Reporter: Kang Xiao
> Fix For: 0.20.205.0
>
> Attachments: MAPREDUCE-2340.patch, MAPREDUCE-2340.patch,
> MAPREDUCE-2340.r1.diff
>
>
> JobTracker's hostnameToNodeMap cache can speed up JobInProgress.initTasks()
> and JobInProgress.createCache() significantly. A test for 1 job with 100000
> maps on a 2400 cluster shows nearly 10 and 50 times speed up for initTasks()
> and createCache().
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
