sadikovi commented on a change in pull request #34462: URL: https://github.com/apache/spark/pull/34462#discussion_r741498183
########## File path: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaSuite.scala ########## @@ -388,6 +391,27 @@ class ParquetSchemaSuite extends ParquetSchemaTest { } } + test("SPARK-37191: Schema merging for DecimalType with different precision but the same scale") { + import testImplicits._ + + withTempPath { dir => + val path = dir.getCanonicalPath + + val data1 = spark.sparkContext.parallelize(Seq(Row(new BigDecimal("123456789.11"))), 1) + val schema1 = StructType(StructField("col", DecimalType(12, 2)) :: Nil) + + val data2 = spark.sparkContext.parallelize(Seq(Row(new BigDecimal("1234567890000.11"))), 1) + val schema2 = StructType(StructField("col", DecimalType(17, 2)) :: Nil) + + spark.createDataFrame(data1, schema1).write.parquet(path) + spark.createDataFrame(data2, schema2).write.mode("append").parquet(path) + + val res = spark.read.option("mergeSchema", "true").parquet(path) + assert(res.schema("col").dataType == DecimalType(17, 2)) + res.foreach(_ => ()) // must not throw exception Review comment: ParquetSchemaSuite did not have `checkAnswer` so I left it as is originally. This has been updated since, I moved the test to ParquetQuerySuite and added `withAllParquetReaders` to test against all of the parquet readers. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org