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https://issues.apache.org/jira/browse/YARN-3359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15640396#comment-15640396
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Varun Saxena commented on YARN-3359:
------------------------------------
[~gtCarrera9], wouldn't it be better to have code like below ?
If we get from map twice in the if condition, we can still potentially get a
NPE even though the first check is for null
{code}
Application app = context.getApplications().get(entry.getKey());
if (app != null && !ApplicationState.FINISHED.equals(
app.getApplicationState())) {
........
} else {
........
}
{code}
> Recover collector list in RM failed over
> ----------------------------------------
>
> Key: YARN-3359
> URL: https://issues.apache.org/jira/browse/YARN-3359
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Junping Du
> Assignee: Li Lu
> Labels: YARN-5355, oct16-medium
> Attachments: YARN-3359-YARN-5355.001.patch,
> YARN-3359-YARN-5355.002.patch, YARN-3359-YARN-5355.003.patch,
> YARN-3359-YARN-5638.patch
>
>
> Per discussion in YARN-3039, split the recover work from RMStateStore in a
> separated JIRA.
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