EdisonWang created SPARK-26544:
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Summary: the string serialized from map/array type is not a valid
json (while hive is)
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
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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