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https://issues.apache.org/jira/browse/YARN-7138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199176#comment-16199176
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Ray Chiang commented on YARN-7138:
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Sorry to come late into this. Should we add a Release Note to YARN-5221 to
document the incompatibility and mark the JIRA as incompatible?
> Fix incompatible API change for YarnScheduler involved by YARN-5221
> -------------------------------------------------------------------
>
> Key: YARN-7138
> URL: https://issues.apache.org/jira/browse/YARN-7138
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Reporter: Junping Du
> Priority: Critical
>
> From JACC report for 2.8.2 against 2.7.4, it indicates that we have
> incompatible changes happen in YarnScheduler:
> {noformat}
> hadoop-yarn-server-resourcemanager-2.7.4.jar, YarnScheduler.class
> package org.apache.hadoop.yarn.server.resourcemanager.scheduler
> YarnScheduler.allocate ( ApplicationAttemptId p1, List<ResourceRequest> p2,
> List<ContainerId> p3, List<String> p4, List<String> p5 ) [abstract] :
> Allocation
> {noformat}
> The root cause is YARN-5221. We should change it back or workaround this by
> adding back original API (mark as deprecated if not used any more).
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