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Posted to yarn-issues@hadoop.apache.org by "Tao Yang (JIRA)" <ji...@apache.org> on 2019/04/17 03:58:00 UTC
[jira] [Commented] (YARN-9490) applicationresourceusagereport
return wrong number of reserved containers
[ https://issues.apache.org/jira/browse/YARN-9490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16819703#comment-16819703 ]
Tao Yang commented on YARN-9490:
--------------------------------
Thanks [~zyb] for raising this issue.
The patch makes sense to me, just a small suggestion: we can iterate values if no need to access the keys, and a simpler way is to use stream like this: this.reservedContainers.values().stream().mapToInt(Map::size).sum();
> applicationresourceusagereport return wrong number of reserved containers
> -------------------------------------------------------------------------
>
> Key: YARN-9490
> URL: https://issues.apache.org/jira/browse/YARN-9490
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.3.0
> Reporter: yanbing zhang
> Priority: Minor
> Fix For: 3.3.0
>
> Attachments: YARN-9490.patch
>
>
> when getting an ApplicationResourceUsageReport instance from the class of SchedulerApplicationAttempt, I found the input constructor parameter(reservedContainers.size()) is wrong. because the type of this variable is Map<SchedulerRequestKey, Map<NodeId, RMContainer>>, so "reservedContainer.size()" is not the number of containers, but the number of SchedulerRequestKey.
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