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From "Cheng Lian (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-9407) Parquet shouldn't fail when pushing down predicates over a column whose underlying Parquet type is an ENUM
Date Wed, 12 Aug 2015 12:06:46 GMT

     [ https://issues.apache.org/jira/browse/SPARK-9407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Cheng Lian resolved SPARK-9407.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

Issue resolved by pull request 8107
[https://github.com/apache/spark/pull/8107]

> Parquet shouldn't fail when pushing down predicates over a column whose underlying Parquet
type is an ENUM
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-9407
>                 URL: https://issues.apache.org/jira/browse/SPARK-9407
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.5.0
>            Reporter: Cheng Lian
>            Assignee: Cheng Lian
>            Priority: Blocker
>             Fix For: 1.5.0
>
>
> Spark SQL doesn't have an equivalent data type to Parquet {{BINARY (ENUM)}}, and always
treats it as a UTF-8 encoded {{StringType}}. Thus, predicate over a Parquet {{ENUM}} column
may be pushed down. However, Parquet 1.7.0 and prior versions only support filter push-down
optimization for [a limited set of data types|https://github.com/apache/parquet-mr/blob/apache-parquet-1.7.0/parquet-column/src/main/java/org/apache/parquet/filter2/predicate/ValidTypeMap.java#L66-L80],
and fails the query.
> The simplest solution seems to be upgrading parquet-mr to 1.8.1, which fixes this issue
via PARQUET-201



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