Github user harishreedharan commented on a diff in the pull request:
https://github.com/apache/spark/pull/2882#discussion_r19195386
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/util/WriteAheadLogSuite.scala
---
@@ -0,0 +1,298 @@
+/*
+ * 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.streaming.util
+
+import java.io.{DataInputStream, File, FileInputStream, RandomAccessFile}
+import java.nio.ByteBuffer
+
+import scala.collection.mutable.ArrayBuffer
+import scala.concurrent.duration._
+import scala.language.implicitConversions
+import scala.language.postfixOps
+import scala.util.Random
+
+import WriteAheadLogSuite._
+import com.google.common.io.Files
+import org.apache.commons.io.FileUtils
+import org.apache.hadoop.conf.Configuration
+import org.apache.spark.util.Utils
+import org.scalatest.{BeforeAndAfter, FunSuite}
+import org.scalatest.concurrent.Eventually._
+
+/**
+ * This testsuite tests all classes related to write ahead logs.
+ */
+class WriteAheadLogSuite extends FunSuite with BeforeAndAfter {
+
+ val hadoopConf = new Configuration()
+ var tempDirectory: File = null
+
+ before {
+ tempDirectory = Files.createTempDir()
+ }
+
+ after {
+ if (tempDirectory != null && tempDirectory.exists()) {
+ FileUtils.deleteDirectory(tempDirectory)
+ tempDirectory = null
+ }
+ }
+
+ test("WriteAheadLogWriter - writing data") {
+ val file = new File(tempDirectory, Random.nextString(10))
--- End diff --
I am refactoring much of the tests right now. So we won't use local files
at all - so we should be ok.
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