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https://issues.apache.org/jira/browse/SPARK-21218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065177#comment-16065177
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Andrew Duffy commented on SPARK-21218:
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Curious, I wonder what the previous benchmarks were lacking.
Have you tried disjunction push-down on other datatypes, e.g. strings? In any
case, I'm also on board with this change, if it is in fact useful.
I think [~hyukjin.kwon] was saying we should close this as a dupe, and rename
the PR with the original ticket number (#17091). You can re-open that issue and
say that you've done tests where this now looks like it will be a big
improvement.
> Convert IN predicate to equivalent Parquet filter
> -------------------------------------------------
>
> Key: SPARK-21218
> URL: https://issues.apache.org/jira/browse/SPARK-21218
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer
> Affects Versions: 2.1.1
> Reporter: Michael Styles
> Attachments: IN Predicate.png, OR Predicate.png
>
>
> Convert IN predicate to equivalent expression involving equality conditions
> to allow the filter to be pushed down to Parquet.
> For instance,
> C1 IN (10, 20) is rewritten as (C1 = 10) OR (C1 = 20)
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