9uapaw commented on a change in pull request #4060:
URL: https://github.com/apache/hadoop/pull/4060#discussion_r825640757
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File path:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMAppManager.java
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@@ -640,6 +643,12 @@ private RMAppImpl createAndPopulateNewRMApp(
SchedulerUtils.normalizeAndValidateRequest(amReq, maxAllocation,
queue, isRecovery, rmContext, null, nodeLabelsEnabled);
+ String amNodeLabel = amReq.getNodeLabelExpression();
+ if (org.apache.commons.lang3.StringUtils.isEmpty(amNodeLabel)
Review comment:
Please use a simpler package identifier ie. Stringutils.isEmpty, or
import isEmpty directly.
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