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https://issues.apache.org/jira/browse/SPARK-9894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Apache Spark reassigned SPARK-9894:
-----------------------------------

    Assignee: Yin Huai  (was: Apache Spark)

> Writing of JSON files with MapType is broken
> --------------------------------------------
>
>                 Key: SPARK-9894
>                 URL: https://issues.apache.org/jira/browse/SPARK-9894
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Michael Armbrust
>            Assignee: Yin Huai
>            Priority: Blocker
>
> {code}
> Caused by: scala.MatchError: (MapType(StringType,StringType,true),keys: 
> [StandardRun], values: [true]) (of class scala.Tuple2)
>       at 
> org.apache.spark.sql.execution.datasources.json.JacksonGenerator$$anonfun$org$apache$spark$sql$execution$datasources$json$JacksonGenerator$$valWriter$2$1.apply(JacksonGenerator.scala:89)
>       at 
> org.apache.spark.sql.execution.datasources.json.JacksonGenerator$$anonfun$org$apache$spark$sql$execution$datasources$json$JacksonGenerator$$valWriter$2$1.apply(JacksonGenerator.scala:89)
>       at 
> org.apache.spark.sql.execution.datasources.json.JacksonGenerator$$anonfun$org$apache$spark$sql$execution$datasources$json$JacksonGenerator$$valWriter$2$1.apply(JacksonGenerator.scala:126)
>       at 
> org.apache.spark.sql.execution.datasources.json.JacksonGenerator$$anonfun$org$apache$spark$sql$execution$datasources$json$JacksonGenerator$$valWriter$2$1.apply(JacksonGenerator.scala:89)
>       at 
> org.apache.spark.sql.execution.datasources.json.JacksonGenerator$.apply(JacksonGenerator.scala:133)
>       at 
> org.apache.spark.sql.execution.datasources.json.JsonOutputWriter.writeInternal(JSONRelation.scala:191)
>       at 
> org.apache.spark.sql.execution.datasources.DefaultWriterContainer.writeRows(WriterContainer.scala:224)
> {code}



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