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https://issues.apache.org/jira/browse/HADOOP-13024?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mavin Martin updated HADOOP-13024:
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Attachment: HADOOP-13024.patch.5
> Distcp with -delete feature on raw data not implemented
> -------------------------------------------------------
>
> Key: HADOOP-13024
> URL: https://issues.apache.org/jira/browse/HADOOP-13024
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Mavin Martin
> Assignee: Mavin Martin
> Attachments: HADOOP-13024.patch, HADOOP-13024.patch,
> HADOOP-13024.patch.3, HADOOP-13024.patch.4, HADOOP-13024.patch.5
>
>
> When doing distcp of raw data using -delete feature, following bug appears.
> {code}
> [root@xxx bin]# hadoop distcp -delete -update /.reserved/raw/tmp/a
> /.reserved/raw/tmp/b
> 16/04/14 02:54:01 ERROR tools.DistCp: Exception encountered
> java.io.IOException: DistCp failure: Job job_xxx has failed: Job commit
> failed: org.apache.hadoop.tools.CopyListing$InvalidInputException: The source
> path 'hdfs://nn/.reserved/raw/tmp/b' starts with /.reserved/raw but the
> target path 'hdfs://nn/NONE' does not. Either all or none of the paths must
> have this prefix.
> at
> org.apache.hadoop.tools.SimpleCopyListing.validatePaths(SimpleCopyListing.java:141)
> at
> org.apache.hadoop.tools.CopyListing.buildListing(CopyListing.java:85)
> at
> org.apache.hadoop.tools.GlobbedCopyListing.doBuildListing(GlobbedCopyListing.java:90)
> at
> org.apache.hadoop.tools.CopyListing.buildListing(CopyListing.java:86)
> at
> org.apache.hadoop.tools.mapred.CopyCommitter.deleteMissing(CopyCommitter.java:244)
> at
> org.apache.hadoop.tools.mapred.CopyCommitter.commitJob(CopyCommitter.java:94)
> at
> org.apache.hadoop.mapreduce.v2.app.commit.CommitterEventHandler$EventProcessor.handleJobCommit(CommitterEventHandler.java:274)
> at
> org.apache.hadoop.mapreduce.v2.app.commit.CommitterEventHandler$EventProcessor.run(CommitterEventHandler.java:237)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> at org.apache.hadoop.tools.DistCp.execute(DistCp.java:187)
> 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:429)
> {code}
> The issue is not with the distributed copy, the issue is when it tries to
> delete things in the target that no longer exist in the source, it
> revalidates to make sure NONE is in the /.reserved/raw domain.
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