dongjoon-hyun commented on issue #23057: [SPARK-26078][SQL] Dedup self-join 
attributes on IN subqueries
URL: https://github.com/apache/spark/pull/23057#issuecomment-451235819
 
 
   Hi, @cloud-fan , @gatorsmile , @rxin . I know the correctness issue policy 
on release.
   So, for the most correctness issues, I'm trying to review and cover them.
   
   However, we have already one exceptional correctness issue 
[SPARK-25206](https://issues.apache.org/jira/browse/SPARK-25206) which is 
decided not to be in `branch-2.2` due to technical difficulty and risk. For me, 
`Spark 2.2.3` is a little bit exceptional release since that is a farewell 
release and `branch-2.2` is already EOL and too far from the active branch 
`master`. 
   
   So, for these risky issues (this one: SPARK-26078) and SPARK-25206, I'd like 
to put them out of the scope of the farewell release and recommend the users to 
use the latest one.
   
   How do you think about that?

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