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https://issues.apache.org/jira/browse/MAPREDUCE-4376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402499#comment-13402499
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Kihwal Lee commented on MAPREDUCE-4376:
---------------------------------------
There is a check for null to handle transitions from UNASSIGNED state, but the
check doesn't work anymore because assignedRequest.get() throws NPE after the
following change from MAPREDUCE-3921.
{noformat}
ContainerId get(TaskAttemptId tId) {
if (tId.getTaskId().getTaskType().equals(TaskType.MAP)) {
- return maps.get(tId);
+ return maps.get(tId).getId();
} else {
- return reduces.get(tId);
+ return reduces.get(tId).getId();
}
}
{noformat}
Jason has also suggested we put a time limit in these jobs so that they don't
hang even if something goes wrong.
> TestClusterMRNotification times out
> -----------------------------------
>
> Key: MAPREDUCE-4376
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4376
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, test
> Affects Versions: 2.0.1-alpha
> Reporter: Jason Lowe
> Assignee: Kihwal Lee
>
> The TestClusterMRNotification test is often timing out. git bisect tests
> narrowed it down to MAPREDUCE-3921, as the test consistently passes before
> that change and times out most of the time after picking up that change.
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