Henry Robinson created SPARK-23604:
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Summary: ParquetInteroperabilityTest timestamp test should use
Statistics.hasNonNullValue
Key: SPARK-23604
URL: https://issues.apache.org/jira/browse/SPARK-23604
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.3.0
Reporter: Henry Robinson
We ran into an issue with a downstream build of Spark running against a custom
Parquet build where {{ParquetInteroperabilityTestSuite}} started failing
because {{Statistics.isEmpty}} changed its behavior as of PARQUET-1217.
({{isEmpty() now considers whether there are 0 or more nulls, and by default
{{num_nulls}} is 0 for 'empty' stats objects).
The test really cares about whether the statistics object has values, so a very
simple fix to use {{hasNonNullValue}} instead corrects the issue. Filing it now
because it's a backwards-compatible fix to the current Parquet version so we
can fix it right now before we hit the issue in the future.
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