slfan1989 commented on code in PR #5673:
URL: https://github.com/apache/hadoop/pull/5673#discussion_r1210495371
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hadoop-yarn-project/hadoop-yarn/bin/FederationStateStore/MySQL/FederationStateStoreStoredProcs.sql:
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@@ -92,12 +92,9 @@ CREATE PROCEDURE sp_addApplicationHomeSubCluster(
IN applicationContext_IN BLOB,
OUT storedHomeSubCluster_OUT varchar(256), OUT rowCount_OUT int)
BEGIN
- INSERT INTO applicationsHomeSubCluster
- (applicationId, homeSubCluster, createTime, applicationContext)
- (SELECT applicationId_IN, homeSubCluster_IN, NOW(), applicationContext_IN
- FROM applicationsHomeSubCluster
- WHERE applicationId = applicationId_IN
- HAVING COUNT(*) = 0 );
+ INSERT IGNORE INTO applicationsHomeSubCluster(
Review Comment:
Thank you very much for your question! I will try to find a better way to
handle this code to make it run more smoothly. In the process of submitting
applications, we have added retry logic so that even if this part of the code
fails, we will not miss application information. I will set up a complete Mysql
test environment and submit a large number of apps in a multi-session situation
to confirm the performance.
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