Stamatis Zampetakis created HIVE-24221: ------------------------------------------
Summary: Use vectorizable expression to combine multiple columns in semijoin bloom filters Key: HIVE-24221 URL: https://issues.apache.org/jira/browse/HIVE-24221 Project: Hive Issue Type: Improvement Components: Query Planning Environment: Reporter: Stamatis Zampetakis Assignee: Stamatis Zampetakis Currently, multi-column semijoin reducers use an n-ary call to GenericUDFMurmurHash to combine multiple values into one, which is used as an entry to the bloom filter. However, there are no vectorized operators that treat n-ary inputs. The same goes for the vectorized implementation of GenericUDFMurmurHash introduced in HIVE-23976. The goal of this issue is to choose an alternative way to combine multiple values into one to pass in the bloom filter comprising only vectorized operators. -- This message was sent by Atlassian Jira (v8.3.4#803005)