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https://issues.apache.org/jira/browse/PARQUET-654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249333#comment-16249333
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Hyukjin Kwon commented on PARQUET-654:
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Hi [~rdblue], Is it backported to 1.8.2 as well? Looks I am seeing it in
https://github.com/apache/parquet-mr/blob/apache-parquet-1.8.2/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetInputFormat.java#L122
> Make record-level filtering optional
> ------------------------------------
>
> Key: PARQUET-654
> URL: https://issues.apache.org/jira/browse/PARQUET-654
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
> Reporter: Cheng Lian
> Assignee: Ryan Blue
> Fix For: 1.9.0
>
>
> For some engines, especially those with vectorized Parquet readers, filter
> predicate can often be evaluated more efficiently by the engine. In these
> cases, Parquet record-level filtering may even slow down query execution when
> filter push-down is enabled. On the other hand, when the data is well
> prepared, filter push-down can be very valuable due to row group level
> filtering.
> One possible improvement here is to add a configuration option that makes
> record-level filtering optional. In this way, the upper-level engine may
> leverage both Parquet row group level filtering and faster native
> record-level filtering.
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