Github user wangyum commented on a diff in the pull request:
https://github.com/apache/spark/pull/21623#discussion_r199043411
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilterSuite.scala
---
@@ -660,6 +661,56 @@ class ParquetFilterSuite extends QueryTest with
ParquetTest with SharedSQLContex
assert(df.where("col > 0").count() === 2)
}
}
+
+ test("filter pushdown - StringStartsWith") {
+ withParquetDataFrame((1 to 4).map(i => Tuple1(i + "str" + i))) {
implicit df =>
--- End diff --
Added `testStringStartsWith` to test that exactly go through the `canDrop`
and `inverseCanDrop`.
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