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https://issues.apache.org/jira/browse/SPARK-4413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212805#comment-14212805
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Apache Spark commented on SPARK-4413:
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User 'marmbrus' has created a pull request for this issue:
https://github.com/apache/spark/pull/3269
> Parquet support through datasource API
> --------------------------------------
>
> Key: SPARK-4413
> URL: https://issues.apache.org/jira/browse/SPARK-4413
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Michael Armbrust
> Assignee: Michael Armbrust
> Priority: Critical
>
> Right now there are several issues with out parquet support. Specifically,
> the only way to access parquet files though pure SQL is by including Hive,
> which has the following issues
> - fairly verbose syntax
> - requires you to explicitly add partitions
> - does not support decimal types.
> - querying tables with many partitions results in metadata operations
> dominating the query time (even worse when reading from S3).
> It would be great to have better native support here though the new
> datasources API. Ideally once that is in place we can deprecate the existing
> ParquetRelation.
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