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https://issues.apache.org/jira/browse/SPARK-9347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647634#comment-14647634
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Samphel Norden commented on SPARK-9347:
---------------------------------------

Am trying to get spark to only look at _common_metadata files for 2 different 
schema.
But if the new option is turned on (respect.summarymetadata?) would it merge 
based on different_common_metadata files or would it have to be disabled, and 
we use regular part merging?

> spark load of existing parquet files extremely slow if large number of files
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-9347
>                 URL: https://issues.apache.org/jira/browse/SPARK-9347
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.3.1
>            Reporter: Samphel Norden
>
> When spark sql shell is launched and we point it to a folder containing a 
> large number of parquet files, the sqlContext.parquetFile() command takes a 
> very long time to load the tables. 



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