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https://issues.apache.org/jira/browse/SPARK-40177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17583454#comment-17583454
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Apache Spark commented on SPARK-40177:
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User 'ayushi-agarwal' has created a pull request for this issue:
https://github.com/apache/spark/pull/37625
> Simplify join condition of form (a==b) || (a==null&&b==null) to a<=>b
> ---------------------------------------------------------------------
>
> Key: SPARK-40177
> URL: https://issues.apache.org/jira/browse/SPARK-40177
> Project: Spark
> Issue Type: Task
> Components: SQL
> Affects Versions: 3.2.0, 3.3.0
> Reporter: Ayushi Agarwal
> Priority: Major
> Fix For: 3.3.1
>
>
> If the join condition is like key1==key2 || (key1==null && key2==null), join
> is executed as Broadcast Nested Loop Join as this condition doesn't satisfy
> equi join condition. BNLJ takes more time as compared to Sort merge or
> broadcast join. This condition can be converted to key1<=>key2 to make the
> join execute as Broadcast or sort merge join.
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