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https://issues.apache.org/jira/browse/HADOOP-10924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083178#comment-14083178
]
Hadoop QA commented on HADOOP-10924:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12659247/HADOOP-10924.01.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. 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.
{color:red}-1 javac{color:red}. The patch appears to cause the build to
fail.
Console output:
https://builds.apache.org/job/PreCommit-HADOOP-Build/4405//console
This message is automatically generated.
> LocalDistributedCacheManager for concurrent sqoop processes fails to create
> unique directories
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-10924
> URL: https://issues.apache.org/jira/browse/HADOOP-10924
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: William Watson
> Attachments: HADOOP-10924.01.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}
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