[GitHub] [spark] awdavidson commented on a diff in pull request #38312: [SPARK-40819][SQL] Timestamp nanos behaviour regression

[GitBox <gi...@apache.org>]

awdavidson commented on code in PR #38312:
URL: https://github.com/apache/spark/pull/38312#discussion_r1025412863


##########
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaSuite.scala:
##########
@@ -1040,6 +1040,14 @@ class ParquetSchemaSuite extends ParquetSchemaTest {
     }
   }
 
+  test("SPARK-40819 - ability to read parquet file with TIMESTAMP(NANOS, true)") {
+    val testDataPath = getClass.getResource("/test-data/timestamp-nanos.parquet")
+    val data = spark.read.parquet(testDataPath.toString).select("birthday")
+
+    assert(data.schema.fields.head.dataType == LongType)
+    assert(data.take(1).head.getAs[Long](0) == 1668537129000000000L)

Review Comment:
   All rows have the same timestamp



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