Takuya Ueshin created SPARK-24732:
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Summary: Type coercion between MapTypes.
Key: SPARK-24732
URL: https://issues.apache.org/jira/browse/SPARK-24732
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.3.1
Reporter: Takuya Ueshin
It seems currently we don't allow type coercion between maps.
We can support type coercion between MapTypes where both the key types and the
value types are compatible.
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