Stamatis Zampetakis created HIVE-24251:

             Summary: Improve bloom filter size estimation for multi column 
semijoin reducers
                 Key: HIVE-24251
             Project: Hive
          Issue Type: Improvement
          Components: Query Planning
            Reporter: Stamatis Zampetakis
            Assignee: Stamatis Zampetakis

There are various cases where the expected size of the bloom filter is largely 
underestimated  making the semijoin reducer completely ineffective. This more 
relevant for multi-column semi join reducers since the current 
 does not take them into account.

This message was sent by Atlassian Jira

Reply via email to