Xiao Li created SPARK-22722:
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Summary: Test Coverage for Type Coercion Compatibility
Key: SPARK-22722
URL: https://issues.apache.org/jira/browse/SPARK-22722
Project: Spark
Issue Type: Umbrella
Components: SQL
Affects Versions: 2.3.0
Reporter: Xiao Li
Hive compatibility is pretty important for the users who run or migrate both
Hive and Spark SQL.
We plan to add a SQLConf for type coercion compatibility
(spark.sql.typeCoercion.mode). Users can choose Spark's native mode (default)
or Hive mode (hive).
Before we deliver the Hive compatibility mode, we plan to write a set of test
cases that can be easily run in both Spark and Hive sides. We can easily
compare whether they are the same or not. When new typeCoercion rules are
added, we also can easily track the changes. These test cases can also be
backported to the previous Spark versions for determining the changes we made.
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