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https://issues.apache.org/jira/browse/MAPREDUCE-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015539#comment-13015539
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Owen O'Malley commented on MAPREDUCE-2415:
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I'd also change the "Invalid local dir count" error message to "No valid local
directories."
I'd also add an error message in get_nth_local_dir to say, "Invalid index %d
for %d local directories."
With those two covered, you don't need to include the log for "Invalid local
dir."
It looks like the new error messages in initialize_job after calling
open_file_as_task_tracker will produce duplicated messages. Same after
change_user.
> Distribute TaskTracker userlogs onto multiple disks
> ---------------------------------------------------
>
> Key: MAPREDUCE-2415
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2415
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: task-controller, tasktracker
> Affects Versions: 0.20.204.0
> Reporter: Bharath Mundlapudi
> Assignee: Bharath Mundlapudi
> Fix For: 0.20.204.0
>
> Attachments: MAPREDUCE-2415-1.patch, TaskTracker Userlogs Design.pdf
>
>
> Currently, userlogs directory in TaskTracker is placed under hadoop.log.dir
> like <hadoop.log.dir>/userlogs. I am proposing to spread these userlogs onto
> multiple configured mapred.local.dirs to strengthen TaskTracker reliability
> w.r.t disk failures.
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