[ https://issues.apache.org/jira/browse/MAPREDUCE-6441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14649745#comment-14649745 ]
Hadoop QA commented on MAPREDUCE-6441: -------------------------------------- \\ \\ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | pre-patch | 17m 13s | 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 | 8m 21s | There were no new javac warning messages. | | {color:green}+1{color} | javadoc | 10m 23s | 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 43s | There were no new checkstyle issues. | | {color:red}-1{color} | whitespace | 0m 0s | The patch has 1 line(s) that end in whitespace. Use git apply --whitespace=fix. | | {color:green}+1{color} | install | 1m 27s | mvn install still works. | | {color:green}+1{color} | eclipse:eclipse | 0m 36s | The patch built with eclipse:eclipse. | | {color:green}+1{color} | findbugs | 1m 16s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. | | {color:green}+1{color} | mapreduce tests | 0m 48s | Tests passed in hadoop-mapreduce-client-common. | | | | 41m 13s | | \\ \\ || Subsystem || Report/Notes || | Patch URL | http://issues.apache.org/jira/secure/attachment/12705141/HADOOP-10924.03.jobid-plus-uuid.patch | | Optional Tests | javadoc javac unit findbugs checkstyle | | git revision | trunk / d0e0ba8 | | whitespace | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5923/artifact/patchprocess/whitespace.txt | | hadoop-mapreduce-client-common test log | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5923/artifact/patchprocess/testrun_hadoop-mapreduce-client-common.txt | | Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5923/testReport/ | | Java | 1.7.0_55 | | uname | Linux asf904.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/5923/console | This message was automatically generated. > LocalDistributedCacheManager for concurrent sqoop processes fails to create > unique directories > ---------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-6441 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6441 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: William Watson > Assignee: William Watson > Attachments: HADOOP-10924.02.patch, > HADOOP-10924.03.jobid-plus-uuid.patch > > > Kicking off many sqoop processes in different threads results in: > {code} > 2014-08-01 13:47:24 -0400: INFO - 14/08/01 13:47:22 ERROR tool.ImportTool: > Encountered IOException running import job: java.io.IOException: > java.util.concurrent.ExecutionException: java.io.IOException: Rename cannot > overwrite non empty destination directory > /tmp/hadoop-hadoop/mapred/local/1406915233073 > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapred.LocalDistributedCacheManager.setup(LocalDistributedCacheManager.java:149) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapred.LocalJobRunner$Job.<init>(LocalJobRunner.java:163) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapred.LocalJobRunner.submitJob(LocalJobRunner.java:731) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:432) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapreduce.Job$10.run(Job.java:1285) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapreduce.Job$10.run(Job.java:1282) > 2014-08-01 13:47:24 -0400: INFO - at > java.security.AccessController.doPrivileged(Native Method) > 2014-08-01 13:47:24 -0400: INFO - at > javax.security.auth.Subject.doAs(Subject.java:415) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapreduce.Job.submit(Job.java:1282) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.mapreduce.ImportJobBase.doSubmitJob(ImportJobBase.java:186) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.mapreduce.ImportJobBase.runJob(ImportJobBase.java:159) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:239) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.manager.SqlManager.importQuery(SqlManager.java:645) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:415) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.tool.ImportTool.run(ImportTool.java:502) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.Sqoop.run(Sqoop.java:145) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:181) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.Sqoop.runTool(Sqoop.java:220) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.Sqoop.runTool(Sqoop.java:229) > 2014-08-01 13:47:24 -0400: INFO - at > org.apache.sqoop.Sqoop.main(Sqoop.java:238) > {code} > If two are kicked off in the same second. The issue is the following lines of > code in the org.apache.hadoop.mapred.LocalDistributedCacheManager class: > {code} > // Generating unique numbers for FSDownload. > AtomicLong uniqueNumberGenerator = > new AtomicLong(System.currentTimeMillis()); > {code} > and > {code} > Long.toString(uniqueNumberGenerator.incrementAndGet())), > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)