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Posted to yarn-issues@hadoop.apache.org by "Hadoop QA (Jira)" <ji...@apache.org> on 2021/09/24 03:49:00 UTC
[jira] [Commented] (YARN-10968) SchedulingRequests can be wrong
when multiple containers stopped at the same time
[ https://issues.apache.org/jira/browse/YARN-10968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419553#comment-17419553 ]
Hadoop QA commented on YARN-10968:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s{color} | {color:blue}{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 12s{color} | {color:red}{color} | {color:red} YARN-10968 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-10968 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/13034088/YARN-10968.001.patch |
| Console output | https://ci-hadoop.apache.org/job/PreCommit-YARN-Build/1211/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
> SchedulingRequests can be wrong when multiple containers stopped at the same time
> ---------------------------------------------------------------------------------
>
> Key: YARN-10968
> URL: https://issues.apache.org/jira/browse/YARN-10968
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 3.1.2
> Reporter: Lee young gon
> Priority: Major
> Attachments: YARN-10968.001.patch
>
>
> There are two ways to request containers to RM through AMRMClientImpl.
> # addContainerRequest
> # addSchedulingRequests
> These two requests are linked to each parameter in Scheduler's allocate()
> {code:java}
> # addContainerRequest <-> ask
> # addSchedulingRequests <-> schedulingRequestspublic Allocation allocate(ApplicationAttemptId applicationAttemptId,
> List<ResourceRequest> ask, List<SchedulingRequest> schedulingRequests,
> List<ContainerId> release, List<String> blacklistAdditions,
> List<String> blacklistRemovals, ContainerUpdates updateRequests) {
> FiCaSchedulerApp application = getApplicationAttempt(applicationAttemptId);
> {code}
>
> We are using yarn-service and placement_policy, in which case addSchedulingRequests is used.
> AddSchedulingRequests have the problems.
> When two containers are terminated at the same time in the presence of a placement_policy, AM requests a submitting scheduling request twice as follows.
> {code:java}
> 2021-03-31 17:56:07,485 [Component dispatcher] INFO component.Component - [COMPONENT sleep] Requesting for 1 container(s)
> 2021-03-31 17:56:07,485 [Component dispatcher] INFO component.Component - [COMPONENT sleep] Submitting scheduling request: SchedulingRequestPBImpl{priority=0, allocationReqId=0, executionType={Execution Type: GUARANTEED, Enforce Execution Type: true}, allocationTags=[testapp], resourceSizing=ResourceSizingPBImpl{numAllocations=1, resources=<memory:512, vCores:1>}, placementConstraint=notin,node,yarn_node_partition/=[test2]:notin,node,testapp}2021-03-31 17:56:07,486 [Component dispatcher] INFO component.Component - [COMPONENT sleep] Requesting for 1 container(s)
> 2021-03-31 17:56:07,487 [Component dispatcher] INFO component.Component - [COMPONENT sleep] Submitting scheduling request: SchedulingRequestPBImpl{priority=0, allocationReqId=0, executionType={Execution Type: GUARANTEED, Enforce Execution Type: true}, allocationTags=[testapp], resourceSizing=ResourceSizingPBImpl{numAllocations=1, resources=<memory:512, vCores:1>}, placementConstraint=notin,node,yarn_node_partition/=[test2]:notin,node,testapp} {code}
> And this comes to RM at each request.
> Then if the above request is received, the SingleConstrainAppPlaceAllocatorwill have only the last value.
> In other words, if multiple containers die at the same time, multiple requests are created, and RM accepts only the final one request and allocates it.
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