[
https://issues.apache.org/jira/browse/MAPREDUCE-1979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906452#action_12906452
]
Ravi Gummadi commented on MAPREDUCE-1979:
-----------------------------------------
There is need for creation of outputPath just to set the permissions of this
directory to 777 sothat all users(who launch mapreduce jobs within this gridmix
run) will be able to create their own output directories under this outputPath
through mapreduce jobs.
> "Output directory already exists" error in gridmix when
> gridmix.output.directory is not defined
> -----------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1979
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1979
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/gridmix
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: 1979.patch, 1979.v1.1.patch, 1979.v1.2.patch,
> 1979.v1.patch
>
>
> "Output directory already exists" error is seen in gridmix when
> gridmix.output.directory is not defined. When gridmix.output.directory is not
> defined, then gridmix uses inputDir/gridmix/ as output path for gridmix run.
> Because gridmix is creating outputPath(in this case, inputDir/gridmix/) at
> the begining, the output path to generate-data-mapreduce-job(i.e. inputDir)
> already exists and becomes error from mapreduce.
> There is no need of creating this outputPath in any case(whether user
> specifies the path using gridmix.output.directory OR gridmix itself
> considering inputDir/gridmix/ ) because the paths are automatically created
> for output paths of mapreduce jobs(like mkdir -p).
> The other case in which this problem is seen is when gridmix.output.directory
> is defined as a relative path. This is because in this case also, gridmix
> tries to create relative path under ioPath/ and thus the same issue.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
