attilapiros commented on a change in pull request #24080: [SPARK-27147][TEST]Create new unit test cases for SortShuffleWriter URL: https://github.com/apache/spark/pull/24080#discussion_r270635781
########## File path: core/src/test/scala/org/apache/spark/shuffle/sort/SortShuffleWriterSuite.scala ########## @@ -0,0 +1,98 @@ +/* + * 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.shuffle.sort + +import org.mockito.Mockito._ +import org.mockito.MockitoAnnotations +import org.scalatest.Matchers + +import org.apache.spark.{Partitioner, SharedSparkContext, ShuffleDependency, SparkFunSuite} +import org.apache.spark.memory.MemoryTestingUtils +import org.apache.spark.serializer.JavaSerializer +import org.apache.spark.shuffle.{BaseShuffleHandle, IndexShuffleBlockResolver} +import org.apache.spark.util.Utils + +class SortShuffleWriterSuite extends SparkFunSuite with SharedSparkContext with Matchers { + + private val shuffleId = 0 + private val numMaps = 5 + private var shuffleHandle: BaseShuffleHandle[Int, Int, Int] = _ + private val shuffleBlockResolver = new IndexShuffleBlockResolver(conf) + private val serializer = new JavaSerializer(conf) + + override def beforeEach(): Unit = { + super.beforeEach() + MockitoAnnotations.initMocks(this) + val partitioner = new Partitioner() { + def numPartitions = numMaps + def getPartition(key: Any) = Utils.nonNegativeMod(key.hashCode, numPartitions) + } + shuffleHandle = { + val dependency = mock(classOf[ShuffleDependency[Int, Int, Int]]) + when(dependency.partitioner).thenReturn(partitioner) + when(dependency.serializer).thenReturn(serializer) + when(dependency.aggregator).thenReturn(None) + when(dependency.keyOrdering).thenReturn(None) + new BaseShuffleHandle(shuffleId, numMaps = numMaps, dependency) + } + } + + override def afterAll(): Unit = { + try { + shuffleBlockResolver.stop() + } finally { + super.afterAll() + } + } + + test("write empty iterator") { + val context = MemoryTestingUtils.fakeTaskContext(sc.env) + val writer = new SortShuffleWriter[Int, Int, Int]( + shuffleBlockResolver, + shuffleHandle, + mapId = 1, + context + ) + writer.write(Iterator.empty) + writer.stop(success = true) + val dataFile = shuffleBlockResolver.getDataFile(shuffleId, 1) + assert(!dataFile.exists()) + assert(dataFile.length() === 0) + assert(context.taskMetrics().shuffleWriteMetrics.bytesWritten === 0) + assert(context.taskMetrics().shuffleWriteMetrics.recordsWritten === 0) + + } + + test("write with some records") { + val context = MemoryTestingUtils.fakeTaskContext(sc.env) + val records = Iterator((1, 2), (2, 3), (4, 4), (6, 5)) + val writer = new SortShuffleWriter[Int, Int, Int]( + shuffleBlockResolver, + shuffleHandle, + mapId = 2, + context + ) + writer.write(records) + writer.stop(success = true) + val dataFile = shuffleBlockResolver.getDataFile(shuffleId, 2) Review comment: Delete the `dataFile` at the end of the test. ---------------------------------------------------------------- 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]
