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https://issues.apache.org/jira/browse/SPARK-8838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14614893#comment-14614893
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Apache Spark commented on SPARK-8838:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/7238
> Add config to enable/disable merging part-files when merging parquet schema
> ---------------------------------------------------------------------------
>
> Key: SPARK-8838
> URL: https://issues.apache.org/jira/browse/SPARK-8838
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Liang-Chi Hsieh
>
> Currently all part-files are merged when merging parquet schema. However, in
> case there are many part-files and we can make sure that all the part-files
> have the same schema as their summary file. If so, we provide a configuration
> to disable merging part-files when merging parquet schema.
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