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Hadoop QA commented on YARN-4287: --------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | pre-patch | 17m 9s | Pre-patch trunk compilation is healthy. | | {color:green}+1{color} | @author | 0m 0s | The patch does not contain any @author tags. | | {color:green}+1{color} | tests included | 0m 0s | The patch appears to include 4 new or modified test files. | | {color:green}+1{color} | javac | 7m 59s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 10m 26s | There were no new javadoc warning messages. | | {color:green}+1{color} | release audit | 0m 24s | The applied patch does not increase the total number of release audit warnings. | | {color:red}-1{color} | checkstyle | 0m 50s | The applied patch generated 4 new checkstyle issues (total was 257, now 259). | | {color:red}-1{color} | whitespace | 0m 12s | The patch has 1 line(s) that end in whitespace. Use git apply --whitespace=fix. | | {color:green}+1{color} | install | 1m 31s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 34s | The patch built with eclipse:eclipse. | | {color:green}+1{color} | findbugs | 1m 31s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | yarn tests | 58m 19s | Tests passed in hadoop-yarn-server-resourcemanager. | | | | 99m 3s | | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12768138/YARN-4287-v2.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / 124a412 | | checkstyle | https://builds.apache.org/job/PreCommit-YARN-Build/9533/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt | | whitespace | https://builds.apache.org/job/PreCommit-YARN-Build/9533/artifact/patchprocess/whitespace.txt | | hadoop-yarn-server-resourcemanager test log | https://builds.apache.org/job/PreCommit-YARN-Build/9533/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt | | Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/9533/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf902.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux | | Console output | https://builds.apache.org/job/PreCommit-YARN-Build/9533/console | This message was automatically generated. > Capacity Scheduler: Rack Locality improvement > --------------------------------------------- > > Key: YARN-4287 > URL: https://issues.apache.org/jira/browse/YARN-4287 > Project: Hadoop YARN > Issue Type: Improvement > Components: capacityscheduler > Affects Versions: 2.7.1 > Reporter: Nathan Roberts > Assignee: Nathan Roberts > Attachments: YARN-4287-v2.patch, YARN-4287.patch > > > YARN-4189 does an excellent job describing the issues with the current delay > scheduling algorithms within the capacity scheduler. The design proposal also > seems like a good direction. > This jira proposes a simple interim solution to the key issue we've been > experiencing on a regular basis: > - rackLocal assignments trickle out due to nodeLocalityDelay. This can have > significant impact on things like CombineFileInputFormat which targets very > specific nodes in its split calculations. > I'm not sure when YARN-4189 will become reality so I thought a simple interim > patch might make sense. The basic idea is simple: > 1) Separate delays for rackLocal, and OffSwitch (today there is only 1) > 2) When we're getting rackLocal assignments, subsequent rackLocal assignments > should not be delayed > Patch will be uploaded shortly. No big deal if the consensus is to go > straight to YARN-4189. -- This message was sent by Atlassian JIRA (v6.3.4#6332)