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https://issues.apache.org/jira/browse/SPARK-2443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14063530#comment-14063530
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Michael Armbrust commented on SPARK-2443:
-----------------------------------------
[~chutium], I would recommend using the native parquet interface if possible
(explained in the programming guide:
http://spark.apache.org/docs/latest/sql-programming-guide.html). That said,
others have reported success using the hive serde for parquet as well.
Please ask future questions on the user mailing list and not JIRA:
https://spark.apache.org/community.html
> Reading from Partitioned Tables is Slow
> ---------------------------------------
>
> Key: SPARK-2443
> URL: https://issues.apache.org/jira/browse/SPARK-2443
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Michael Armbrust
> Assignee: Zongheng Yang
> Fix For: 1.1.0, 1.0.2
>
>
> Here are some numbers, all queries return ~20million:
> {code}
> SELECT COUNT(*) FROM <non partitioned table>
> 5.496467726 s
> SELECT COUNT(*) FROM <partitioned table stored in parquet>
> 50.266666947 s
> SELECT COUNT(*) FROM <same table as previous but loaded with parquetFile
> instead of through hive>
> 2s
> {code}
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