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https://issues.apache.org/jira/browse/SPARK-18362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15648640#comment-15648640
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Apache Spark commented on SPARK-18362:
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User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/15813
> Use TextFileFormat in implementation of JsonFileFormat and CSVFileFormat
> ------------------------------------------------------------------------
>
> Key: SPARK-18362
> URL: https://issues.apache.org/jira/browse/SPARK-18362
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Josh Rosen
> Assignee: Josh Rosen
>
> Spark's CSVFileFormat and JsonFileFormat data sources use inefficient methods
> for reading files during schema inference and do not benefit from file
> listing / IO performance improvements made in Spark 2.0. In order to fix this
> performance problem, we should re-implement those read paths in terms of
> TextFileFormat.
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