Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/16133#discussion_r90783813
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/ColumnExpressionSuite.scala ---
@@ -533,31 +533,54 @@ class ColumnExpressionSuite extends QueryTest with
SharedSQLContext {
)
}
- test("input_file_name - FileScanRDD") {
+ test("input_file_name, input_file_block_start, input_file_block_length -
FileScanRDD") {
withTempPath { dir =>
val data = sparkContext.parallelize(0 to 10).toDF("id")
data.write.parquet(dir.getCanonicalPath)
- val answer =
spark.read.parquet(dir.getCanonicalPath).select(input_file_name())
- .head.getString(0)
- assert(answer.contains(dir.getCanonicalPath))
- checkAnswer(data.select(input_file_name()).limit(1), Row(""))
+ // Test the 3 expressions when reading from files
+ val q = spark.read.parquet(dir.getCanonicalPath).select(
+ input_file_name(), expr("input_file_block_start()"),
expr("input_file_block_length()"))
--- End diff --
I'm actually intentionally not adding those because I don't know how common
these expressions will be.
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