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Lantao Jin commented on YARN-9394: ---------------------------------- Hi, [~cheersyang], this is a followup of [YARN-9332|https://issues.apache.org/jira/browse/YARN-9332]. It could benefit the caller from AMRMClient. Besides, MapReduce also has some invokers like https://github.com/apache/hadoop/blob/e97acb3bd8f3befd27418996fa5d4b50bf2e17bf/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskAttemptImpl.java#L686 and https://github.com/apache/hadoop/blob/e97acb3bd8f3befd27418996fa5d4b50bf2e17bf/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java#L1444 > Use new API of RackResolver to get better performance > ----------------------------------------------------- > > Key: YARN-9394 > URL: https://issues.apache.org/jira/browse/YARN-9394 > Project: Hadoop YARN > Issue Type: Improvement > Components: yarn > Affects Versions: 3.3.0, 3.2.1 > Reporter: Lantao Jin > Assignee: Lantao Jin > Priority: Major > Attachments: YARN-9394.001.patch > > > After adding a new API in RackResolver YARN-9332, some old callers should > switch to new API to get better performance. As an example, Spark > [YarnAllocator|https://github.com/apache/spark/blob/733f2c0b98208815f8408e36ab669d7c07e3767f/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala#L361-L363] > for Dynamic Allocation invokes > [https://github.com/apache/hadoop/blob/6fa229891e06eea62cb9634efde755f40247e816/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/api/impl/AMRMClientImpl.java#L550] > to resolve racks in a loop. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org