mahesh kumar behera created HIVE-23904:
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Summary: Update TestMapJoinOperator for adding anti join test
cases.
Key: HIVE-23904
URL: https://issues.apache.org/jira/browse/HIVE-23904
Project: Hive
Issue Type: Bug
Reporter: mahesh kumar behera
Assignee: mahesh kumar behera
In case of anti join, bloom filter can be created on left side also ("IN
(keylist right table)").But the filter should be "not-in" ("NOT IN (keylist
right table)") as we want to select the records from left side which are not
present in the right side. But it may cause wrong result as bloom filter may
have false positive and thus simply adding not is not correct, special handling
is required for "NOT IN".
[https://github.com/jmhodges/opposite_of_a_bloom_filter/]
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