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Posted to issues@spark.apache.org by "Yin Huai (JIRA)" <ji...@apache.org> on 2015/05/15 21:39:59 UTC
[jira] [Commented] (SPARK-7673) DataSourceStrategy''s
buildPartitionedTableScan always list list file status for all data files
[ https://issues.apache.org/jira/browse/SPARK-7673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546064#comment-14546064 ]
Yin Huai commented on SPARK-7673:
---------------------------------
This cause pretty significant performance regression for partitioned parquet tables. table().explain() can take 80s for a table with around 2000 partitions.
> DataSourceStrategy''s buildPartitionedTableScan always list list file status for all data files
> ------------------------------------------------------------------------------------------------
>
> Key: SPARK-7673
> URL: https://issues.apache.org/jira/browse/SPARK-7673
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.4.0
> Reporter: Yin Huai
> Priority: Blocker
> Fix For: 1.4.0
>
>
> See https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala#L134-141
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