Yaohua628 commented on a change in pull request #34575: URL: https://github.com/apache/spark/pull/34575#discussion_r753875937
########## File path: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileMetadataColumnsSuite.scala ########## @@ -0,0 +1,481 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.execution.datasources + +import java.io.File +import java.nio.file.Files +import java.text.SimpleDateFormat + +import org.apache.spark.sql.{AnalysisException, Column, DataFrame, QueryTest, Row} +import org.apache.spark.sql.functions._ +import org.apache.spark.sql.test.SharedSparkSession +import org.apache.spark.sql.types.{IntegerType, LongType, StringType, StructField, StructType} + +class FileMetadataColumnsSuite extends QueryTest with SharedSparkSession { + + val data0: String = + """ + |jack,24,12345,uom + |""".stripMargin + + val data1: String = + """ + |lily,31,,ucb + |""".stripMargin + + val schema: StructType = new StructType() + .add(StructField("name", StringType)) + .add(StructField("age", IntegerType)) + .add(StructField("id", LongType)) + .add(StructField("university", StringType)) + + val schemaWithNameConflicts: StructType = new StructType() + .add(StructField("name", StringType)) + .add(StructField("age", IntegerType)) + .add(StructField("_metadata.file_size", LongType)) + .add(StructField("_metadata.FILE_NAME", StringType)) Review comment: yep, that's right: just want to make sure: _metadata.file_size (a field in a struct) and _metadata.file_size (a flat column with a dot in its name) are not the same, we can read all metadata columns properly. Add a comment to explain See this test: `metadata fields and _metadata.file_size are not the same` The test and the schema are a little bit "weak", I guess. If you think it is not necessary, we can remove it for sure. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
