Pengcheng Xiong created HIVE-11234:
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Summary: CBO: Calcite Operator To Hive Operator (Calcite Return
Path): reconsider the cross product in HiveJoinToMultiJoinRule
Key: HIVE-11234
URL: https://issues.apache.org/jira/browse/HIVE-11234
Project: Hive
Issue Type: Sub-task
Reporter: Pengcheng Xiong
Cross product in HiveJoinToMultiJoinRule needs to be reconsidered. Now the
following explain query will fail at L1116 StatsRulesProcFactory : FAILED:
IndexOutOfBoundsException Index: 0, Size: 0 because the key in one of the
branches of the join is empty.
{code}
explain select * from src
where src.key not in (select key from src1);
{code}
If we run
{code}
select * from src
where src.key not in (select key from src1);
{code}
we will have "FAILED: Execution Error, return code 2 from
org.apache.hadoop.hive.ql.exec.mr.MapRedTask". The root cause is the same.
Other queries that will also fail include cbo_subq_not_in.q etc.
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