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https://issues.apache.org/jira/browse/SPARK-23968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-23968.
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Resolution: Incomplete
> allow reading JSON that is composed of pure maps
> ------------------------------------------------
>
> Key: SPARK-23968
> URL: https://issues.apache.org/jira/browse/SPARK-23968
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Andi
> Priority: Major
> Labels: bulk-closed
>
> org.apache.spark.sql.DataFrameReader#schema requires a StructType and hence
> cannot be provided with a MapType.
> The usecase is to allow processing JSON encoded with id's as keys, rather
> than well formed property names as the outer wrapper
> [ \{ "id-1": {"name": "bar"} , \{"id-2": {"name:"foo"} ]
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