henrib commented on code in PR #4569:
URL: https://github.com/apache/hive/pull/4569#discussion_r1291066982
##########
standalone-metastore/metastore-server/src/main/sql/mssql/upgrade-4.0.0-alpha-2-to-4.0.0-beta-1.mssql.sql:
##########
@@ -44,6 +44,8 @@ UPDATE "SERDES"
LEFT JOIN "SDS" ON "TBLS"."SD_ID" = "SDS"."SD_ID"
WHERE "TBL_ID" IN (SELECT "TBL_ID" FROM "TABLE_PARAMS" WHERE
"PARAM_VALUE" LIKE '%KuduStorageHandler%')
);
+-- HIVE-27499
+CREATE UNIQUE INDEX NOTIFICATION_LOG_UNIQUE_DB ON NOTIFICATION_LOG (DB_NAME,
EVENT_ID);
Review Comment:
I believe this new index is helping selectivity for notification log queries
qualified by a database name and a range on event_id (if not mistaken). Adding
table,catalog name would not help this purpose.
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