slfan1989 commented on code in PR #4846:
URL: https://github.com/apache/hadoop/pull/4846#discussion_r965313622
##########
hadoop-yarn-project/hadoop-yarn/bin/FederationStateStore/MySQL/FederationStateStoreStoredProcs.sql:
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@@ -122,10 +122,17 @@ BEGIN
WHERE applicationId = applicationID_IN;
END //
-CREATE PROCEDURE sp_getApplicationsHomeSubCluster()
-BEGIN
- SELECT applicationId, homeSubCluster
- FROM applicationsHomeSubCluster;
+CREATE PROCEDURE sp_getApplicationsHomeSubCluster(IN limit_IN int, IN
homeSubCluster_IN varchar(256))
+BEGIN
+ SET @row_num = 0;
+ SELECT
+ applicationId, homeSubCluster
+ FROM (SELECT
+ applicationId, homeSubCluster, (@rownum := @rownum + 1) AS row_num
+ FROM applicationsHomeSubCluster) AS t
+ WHERE row_num <= limit_IN
Review Comment:
Thank you very much for your suggestion, we should sort the apps and get the
topN apps, I will modify the code.
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