Rajesh Balamohan created HIVE-23521: ---------------------------------------
Summary: REPL: Optimise partition loading during bootstrap Key: HIVE-23521 URL: https://issues.apache.org/jira/browse/HIVE-23521 Project: Hive Issue Type: Improvement Reporter: Rajesh Balamohan When bootstrapping with large "REPL dump" with ~10K partitions, it starts executing "addPartition" in sequential manner and takes very long time as it communicates with HMS/registers partition etc for every call. [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/repl/bootstrap/load/table/LoadPartitions.java#L399] [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/repl/bootstrap/load/table/LoadPartitions.java#L165] [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/repl/bootstrap/load/table/LoadPartitions.java#L210] When bootstrap loading has to deal with DDL, it would be good to collate all partitions in single call to HMS. This would help in reducing overall runtime. -- This message was sent by Atlassian Jira (v8.3.4#803005)