Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/19682#discussion_r149314957 --- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala --- @@ -592,6 +592,19 @@ private[client] class Shim_v0_13 extends Shim_v0_12 { } } + + /** + * An extractor that matches all binary comparison operators except null-safe equality. + * + * null-safe equality is not supported by Hive metastore partition predicate pushdown + */ + object OperatorsInMetastorePartitionFPD { --- End diff -- This name looks weird... maybe just `SpecialBinaryComparison` and explain the detail in the document.
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