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https://issues.apache.org/jira/browse/HADOOP-3713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HADOOP-3713:
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Priority: Blocker (was: Major)
Assignee: Amareshwari Sriramadasu
> broken symlinks in jobcache when local tasks are done but job is in progress
> ----------------------------------------------------------------------------
>
> Key: HADOOP-3713
> URL: https://issues.apache.org/jira/browse/HADOOP-3713
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.17.0
> Reporter: Rajiv Chittajallu
> Assignee: Amareshwari Sriramadasu
> Priority: Blocker
> Fix For: 0.18.0
>
>
> When all running tasks on a tasktracker are done, not all links for
> /<mapred.local.dir>/taskTracker/jobcache/<job>/work are deleted. This is
> resulting in new tasks from the same job scheduled on this node to fail with
> 2008-07-07 17:44:49,756 INFO org.apache.hadoop.mapred.TaskTracker:
> LaunchTaskAction: task_200807071715_0022_r_000295_0
> 2008-07-07 17:44:49,773 WARN org.apache.hadoop.mapred.TaskTracker: Error
> initializing task_200807071715_0022_r_000295_0:
> java.io.IOException: Mkdirs failed to create
> /tmp3/taskTracker/jobcache/job_200807071715_0022/work
> at org.apache.hadoop.mapred.TaskTracker.localizeJob(TaskTracker.java:680)
> at
> org.apache.hadoop.mapred.TaskTracker.startNewTask(TaskTracker.java:1274)
> at
> org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:915)
> at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:1310)
> at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:2251)
> $ ls -lt /tmp3/taskTracker/jobcache/job_200807071715_0022/work
> lrwxrwxrwx 1 user users 135 Jul 7 17:44
> /tmp3/taskTracker/jobcache/job_200807071715_0022/work ->
> /tmp0/taskTracker/jobcache/job_200807071715_0022/work
> $ ls -lt /tmp0/mapred-local/taskTracker/jobcache/job_200807071715_0022/work
> ls: /tmp0/taskTracker/jobcache/job_200807071715_0022/work: No such file or
> directory
> Earlier tasks scheduled on this tasktracker have completed successfully
> 2008-07-07 17:44:44,926 INFO org.apache.hadoop.mapred.TaskRunner:
> task_200807071715_0022_r_000004_0 done; removing files.
> 2008-07-07 17:44:44,931 INFO org.apache.hadoop.mapred.TaskRunner:
> task_200807071715_0022_r_000176_0 done; removing files.
> 2008-07-07 17:44:44,958 INFO org.apache.hadoop.mapred.TaskRunner:
> task_200807071715_0022_r_000210_0 done; removing files.
> 2008-07-07 17:44:49,486 INFO org.apache.hadoop.mapred.TaskRunner:
> task_200807071715_0022_r_000153_0 done; removing files.
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