Cheng Lian created SPARK-10591:
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Summary: False negative in QueryTest.checkAnswer
Key: SPARK-10591
URL: https://issues.apache.org/jira/browse/SPARK-10591
Project: Spark
Issue Type: Bug
Components: SQL, Tests
Affects Versions: 1.5.0, 1.4.1, 1.3.1, 1.2.2, 1.1.1, 1.0.2
Reporter: Cheng Lian
# For double and float, `NaN == NaN` is always `false`
# `checkAnswer` doesn't handle `Map` properly. For example:
{noformat}
scala> Map(1 -> 2, 2 -> 1).toString
res0: String = Map(1 -> 2, 2 -> 1)
scala> Map(2 -> 1, 1 -> 2).toString
res1: String = Map(2 -> 1, 1 -> 2)
{noformat}
We can't rely on `toString` to compare `Map` instances.
Need to update `checkAnswer` to special case `NaN` and `Map`.
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