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Posted to yarn-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2018/10/22 18:01:00 UTC
[jira] [Commented] (YARN-8921) SnapshotBasedOverAllocationPolicy
always caps the amount of memory availabe to 4 GBs
[ https://issues.apache.org/jira/browse/YARN-8921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16659240#comment-16659240 ]
Hadoop QA commented on YARN-8921:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 4s{color} | {color:red} YARN-8921 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | YARN-8921 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12945068/YARN-8921.00.patch |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/22276/console |
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This message was automatically generated.
> SnapshotBasedOverAllocationPolicy always caps the amount of memory availabe to 4 GBs
> ------------------------------------------------------------------------------------
>
> Key: YARN-8921
> URL: https://issues.apache.org/jira/browse/YARN-8921
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: YARN-1011
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Priority: Major
> Attachments: YARN-8921.00.patch
>
>
> The memory overallocate threshold is a float, so is (overAllocationThresholds.getMemoryThreshold() *
> containersMonitor.getPmemAllocatedForContainers()). Because Math.round(float) return an int, this would cap effectively the amount of memory available for overallocation to Integer.MAX_VALUE, [see the code at here|https://github.com/apache/hadoop/blob/fa864b8744cfdfe613a917ba1bbd859a5b6f70b8/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/SnapshotBasedOverAllocationPolicy.java#L45]
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