Gengliang Wang created SPARK-32302:
--------------------------------------
Summary: Partially push down disjunctive predicates through Join
Key: SPARK-32302
URL: https://issues.apache.org/jira/browse/SPARK-32302
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.1.0
Reporter: Gengliang Wang
Assignee: Gengliang Wang
In https://github.com/apache/spark/pull/28733, CNF conversion is used to push
down disjunctive predicates through join.
It's a good improvement, however,
1. converting all the predicates in CNF can lead to a very long result, even
with grouping functions over expressions.
2.the non-recursive is not easy for understanding.
Essentially, we just need to traverse predicate and extract the convertible
sub-predicates like what we did in https://github.com/apache/spark/pull/24598.
There is no need to maintain the CNF result set.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
