[jira] [Assigned] (SPARK-23604) ParquetInteroperabilityTest timestamp test should use Statistics.hasNonNullValue

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-23604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-23604:
------------------------------------

    Assignee:     (was: Apache Spark)

> 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
>            Priority: Minor
>
> 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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