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https://issues.apache.org/jira/browse/SPARK-26544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16734809#comment-16734809
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Apache Spark commented on SPARK-26544:
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User 'WangGuangxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/23460
> escape string when serialize map/array to make it a valid json (keep
> alignment with hive)
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-26544
> URL: https://issues.apache.org/jira/browse/SPARK-26544
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: EdisonWang
> Priority: Major
>
> when reading a hive table with map/array type, the string serialized by
> thrift server is not a valid json, while hive is.
> For example, select a field whose type is map<string, string>, the spark
> thrift server returns
>
> {code:java}
> {"author_id":"123","log_pb":"{"impr_id":"20181231"}","request_id":"001"}
> {code}
>
> while hive thriftserver returns
>
> {code:java}
> {"author_id":"123", "log_pb":"{\"impr_id\":\"20181231\"}","request_id":"001"}
> {code}
>
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