You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-dev@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2006/06/26 19:37:31 UTC
[jira] Resolved: (HADOOP-135) Potential deadlock in JobTracker.
[ http://issues.apache.org/jira/browse/HADOOP-135?page=all ]
Doug Cutting resolved HADOOP-135:
---------------------------------
Resolution: Fixed
I just committed this. Thanks, Owen.
> Potential deadlock in JobTracker.
> ---------------------------------
>
> Key: HADOOP-135
> URL: http://issues.apache.org/jira/browse/HADOOP-135
> Project: Hadoop
> Type: Bug
> Components: mapred
> Versions: 0.1.0
> Reporter: Konstantin Shvachko
> Assignee: Owen O'Malley
> Fix For: 0.4.0
> Attachments: fix-lock-order.patch
>
> org.apache.hadoop.mapred.JobTracker.RetireJobs.run()
> locks resources in this order
> synchronized (jobs) {
> synchronized (jobInitQueue) {
> synchronized (jobsByArrival) {
> org.apache.hadoop.mapred.JobTracker.submitJob()
> locks resources in a different order
> synchronized (jobs) {
> synchronized (jobsByArrival) {
> synchronized (jobInitQueue) {
> This potentially can lead to a deadlock.
> Unless there is common lock on top of it in which case these
> three locks are redundant.
--
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