[
https://issues.apache.org/jira/browse/HDFS-10396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yongjun Zhang updated HDFS-10396:
---------------------------------
Attachment: HDFS-10396.001.patch
> Using -diff option with DistCp may get "Comparison method violates its
> general contract" exception
> --------------------------------------------------------------------------------------------------
>
> Key: HDFS-10396
> URL: https://issues.apache.org/jira/browse/HDFS-10396
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-10396.001.patch
>
>
> Using -diff option get the following exception due to a bug in the comparison
> operator:
> {code}
> 16/04/21 14:34:18 WARN tools.DistCp: Failed to use snapshot diff for distcp
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> at java.util.TimSort.mergeHi(TimSort.java:868)
> at java.util.TimSort.mergeAt(TimSort.java:485)
> at java.util.TimSort.mergeForceCollapse(TimSort.java:426)
> at java.util.TimSort.sort(TimSort.java:223)
> at java.util.TimSort.sort(TimSort.java:173)
> at java.util.Arrays.sort(Arrays.java:659)
> at org.apache.hadoop.tools.DistCpSync.moveToTarget(DistCpSync.java:293)
> at org.apache.hadoop.tools.DistCpSync.syncDiff(DistCpSync.java:261)
> at org.apache.hadoop.tools.DistCpSync.sync(DistCpSync.java:131)
> at org.apache.hadoop.tools.DistCp.execute(DistCp.java:163)
> at org.apache.hadoop.tools.DistCp.run(DistCp.java:122)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.tools.DistCp.main(DistCp.java:432)
> 16/04/21 14:34:18 ERROR tools.DistCp: Exception encountered
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
