[jira] [Resolved] (SPARK-27699) Partially push down disjunctive predicated in Parquet/ORC

["Wenchen Fan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-27699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-27699.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0

Issue resolved by pull request 24598
[https://github.com/apache/spark/pull/24598]

> Partially push down disjunctive predicated in Parquet/ORC
> ---------------------------------------------------------
>
>                 Key: SPARK-27699
>                 URL: https://issues.apache.org/jira/browse/SPARK-27699
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Gengliang Wang
>            Assignee: Gengliang Wang
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Currently, in `ParquetFilters` and `OrcFilters`, if the child predicate of `Or` operator can't be entirely pushed down, the predicates will be thrown away. 
> In fact, the conjunctive predicates under `Or` operators can be partially pushed down.
> For example, says `a` and `b` are convertible, while `c` can't be pushed down, the predicate
> `a or (b and c)` 
> can be converted as 
> `(a or b) and (a or c)`
> We can still push down `(a or b)`.



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