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https://issues.apache.org/jira/browse/SPARK-6777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571491#comment-14571491
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Apache Spark commented on SPARK-6777:
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User 'liancheng' has created a pull request for this issue:
https://github.com/apache/spark/pull/6617
> Implement backwards-compatibility rules in Parquet schema converters
> --------------------------------------------------------------------
>
> Key: SPARK-6777
> URL: https://issues.apache.org/jira/browse/SPARK-6777
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 1.0.2, 1.1.1, 1.2.1, 1.3.0, 1.4.0
> Reporter: Cheng Lian
> Priority: Critical
>
> When converting Parquet schemas to/from Spark SQL schemas, we should
> recognize commonly used legacy non-standard representation of complex types.
> We can follow the pattern used in Parquet's {{AvroSchemaConverter}}.
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