[ http://issues.apache.org/jira/browse/HADOOP-639?page=comments#action_12455867 ] Arun C Murthy commented on HADOOP-639: --------------------------------------
Mahadev, there is a corner-case which will fail if we take the RunningJobs.cleanup route: if after the job 'cleanup' the JT allocates a new task to the same TT, that task will fail since the job-dir is gone, which is why this patch will rely on the KillJobAction (sent by JT after the job completes/killed/fails) to cleanup the job-dir... your take? > task cleanup messages can get lost, causing task trackers to keep tasks > forever > ------------------------------------------------------------------------------- > > Key: HADOOP-639 > URL: http://issues.apache.org/jira/browse/HADOOP-639 > Project: Hadoop > Issue Type: Bug > Components: mapred > Affects Versions: 0.7.2 > Reporter: Owen O'Malley > Assigned To: Arun C Murthy > Attachments: HADOOP-639_1.patch, HADOOP-639_2_20061130.patch, > HADOOP-639_3_20061201.patch, HADOOP-639_4_20061205.patch > > > If the pollForTaskWithClosedJob call from a job tracker to a task tracker > times out when a job completes, the tasks are never cleaned up. This can > cause the mini m/r cluster to hang on shutdown, but also is a resource leak. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
