[ https://issues.apache.org/jira/browse/PARQUET-654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249333#comment-16249333 ]
Hyukjin Kwon commented on PARQUET-654: -------------------------------------- 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)