Dilip Biswal created SPARK-25417:
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Summary: ArrayContains function may return incorrect result when
right expression is implicitly down casted
Key: SPARK-25417
URL: https://issues.apache.org/jira/browse/SPARK-25417
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.4.0
Reporter: Dilip Biswal
In ArrayContains, we currently cast the right hand side expression to match the
element type of the left hand side Array. This may result in down casting and
may return wrong result or questionable result.
Example :
{code:java}
spark-sql> select array_position(array(1), 1.34);
true
{code}
{code:java}
spark-sql> select array_position(array(1), 'foo');
null
{code}
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