mengxr commented on a change in pull request #24354: [SPARK-25348][SQL] Data source for binary files URL: https://github.com/apache/spark/pull/24354#discussion_r275021773
########## File path: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/binaryfile/BinaryFileSuite.scala ########## @@ -0,0 +1,105 @@ +/* + * 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.binaryfile + +import java.sql.Timestamp + +import com.google.common.io.{ByteStreams, Closeables} +import org.apache.hadoop.fs.{GlobFilter, Path} + +import org.apache.spark.sql.{QueryTest, Row} +import org.apache.spark.sql.functions.col +import org.apache.spark.sql.test.{SharedSQLContext, SQLTestUtils} + +class BinaryFileSuite extends QueryTest with SharedSQLContext with SQLTestUtils { + + private lazy val filePath = testFile("test-data/binaryfile-partitioned") + + private lazy val fsFilePath = new Path(filePath) + + private lazy val fs = fsFilePath.getFileSystem(sparkContext.hadoopConfiguration) + + def testBinaryFileDataSource(pathGlobFilter: String, expectedCount: Int): Unit = { + val resultDF = spark.read.format("binaryFile") + .option("pathGlobFilter", pathGlobFilter) + .load(filePath) + .select( + col("status.path"), + col("status.modificationTime"), + col("status.len"), + col("content"), + col("year") // this is a partition column + ) + + val expectedRowSet = new collection.mutable.HashSet[Row]() + + val globFilter = new GlobFilter(pathGlobFilter) + for (partitionDirStatus <- fs.listStatus(fsFilePath)) { + val dirPath = partitionDirStatus.getPath + + val partitionName = dirPath.getName.split("=")(1) + val year = partitionName.toInt // partition column "year" value which is `Int` type + + for (fileStatus <- fs.listStatus(dirPath)) { + if (globFilter.accept(fileStatus.getPath)) { + val fpath = fileStatus.getPath.toString.replace("file:/", "file:///") + val flen = fileStatus.getLen + val modificationTime = new Timestamp(fileStatus.getModificationTime) + + val fcontent = { + val stream = fs.open(fileStatus.getPath) + val content = try { + ByteStreams.toByteArray(stream) + } finally { + Closeables.close(stream, true) + } + content + } + + val row = Row(fpath, modificationTime, flen, fcontent, year) + expectedRowSet.add(row) + } + } + } + + val result = resultDF.collect() + assert(Set(result: _*) === expectedRowSet.toSet) + assert(result.length === expectedCount) + } + + test("binary file data source test") { + testBinaryFileDataSource(pathGlobFilter = "*.*", expectedCount = 4) Review comment: Why do we need to have expected count? After listStatus, can we just filter using a `GlobFilter` instance? ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
