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Hadoop QA commented on MAPREDUCE-6361: -------------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | pre-patch | 14m 57s | 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 1 new or modified test files. | | {color:green}+1{color} | javac | 7m 37s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 9m 41s | There were no new javadoc warning messages. | | {color:green}+1{color} | release audit | 0m 22s | The applied patch does not increase the total number of release audit warnings. | | {color:green}+1{color} | checkstyle | 0m 45s | There were no new checkstyle issues. | | {color:red}-1{color} | whitespace | 0m 0s | The patch has 9 line(s) that end in whitespace. Use git apply --whitespace=fix. | | {color:green}+1{color} | install | 1m 33s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 34s | The patch built with eclipse:eclipse. | | {color:green}+1{color} | findbugs | 1m 13s | The patch does not introduce any new Findbugs (version 2.0.3) warnings. | | {color:green}+1{color} | mapreduce tests | 1m 36s | Tests passed in hadoop-mapreduce-client-core. | | | | 38m 22s | | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12732215/MAPREDUCE-6361-v1.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / 8badd82 | | whitespace | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5714/artifact/patchprocess/whitespace.txt | | hadoop-mapreduce-client-core test log | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5714/artifact/patchprocess/testrun_hadoop-mapreduce-client-core.txt | | Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5714/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf903.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-MAPREDUCE-Build/5714/console | This message was automatically generated. > NPE issue in shuffle caused by concurrent issue between copySucceeded() in > one thread and copyFailed() in another thread on the same host > ----------------------------------------------------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-6361 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6361 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Junping Du > Assignee: Junping Du > Priority: Critical > Attachments: MAPREDUCE-6361-v1.patch > > > The failure in log: > 2015-05-08 21:00:00,513 WARN [main] org.apache.hadoop.mapred.YarnChild: > Exception running child : > org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in > shuffle in fetcher#25 > at > org.apache.hadoop.mapreduce.task.reduce.Shuffle.run(Shuffle.java:134) > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:376) > at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:415) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628) > at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.mapreduce.task.reduce.ShuffleSchedulerImpl.copyFailed(ShuffleSchedulerImpl.java:267) > at > org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:308) > at > org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:193) -- This message was sent by Atlassian JIRA (v6.3.4#6332)