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 "Vinod K V (JIRA)" <ji...@apache.org> on 2008/10/08 15:20:44 UTC
[jira] Created: (HADOOP-4375) Accesses to CompletedJobStore should
not lock the JobTracker.
Accesses to CompletedJobStore should not lock the JobTracker.
-------------------------------------------------------------
Key: HADOOP-4375
URL: https://issues.apache.org/jira/browse/HADOOP-4375
Project: Hadoop Core
Issue Type: Bug
Reporter: Vinod K V
When CompletedJobStatusStore is configured to use dfs, it can cause lockup of JT due to inline dfs access.
For e.g.
{code}
public synchronized JobStatus getJobStatus(JobID jobid) {
JobInProgress job = jobs.get(jobid);
if (job != null) {
return job.getStatus();
} else {
return completedJobStatusStore.readJobStatus(jobid);
}
}
{code}
Instead, JT should be locked only when accessing its internal memory structures. The other such methods are JobTracker.getJobCounters, JobTracker.getJobProfile and JobTracker.finalizeJob.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Resolved: (HADOOP-4375) Accesses to CompletedJobStore should
not lock the JobTracker.
Posted by "Vinod K V (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-4375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod K V resolved HADOOP-4375.
-------------------------------
Resolution: Duplicate
HADOOP-5285 fixed this.
> Accesses to CompletedJobStore should not lock the JobTracker.
> -------------------------------------------------------------
>
> Key: HADOOP-4375
> URL: https://issues.apache.org/jira/browse/HADOOP-4375
> Project: Hadoop Core
> Issue Type: Bug
> Reporter: Vinod K V
>
> When CompletedJobStatusStore is configured to use dfs, it can cause lockup of JT due to inline dfs access.
> For e.g.
> {code}
> public synchronized JobStatus getJobStatus(JobID jobid) {
> JobInProgress job = jobs.get(jobid);
> if (job != null) {
> return job.getStatus();
> } else {
> return completedJobStatusStore.readJobStatus(jobid);
> }
> }
> {code}
> Instead, JT should be locked only when accessing its internal memory structures. The other such methods are JobTracker.getJobCounters, JobTracker.getJobProfile and JobTracker.finalizeJob.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.