Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/1929#discussion_r60933644
--- Diff:
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/functions/source/FileSplitMonitoringFunctionTest.java
---
@@ -0,0 +1,371 @@
+/*
+ * 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.flink.streaming.api.functions.source;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.flink.api.common.io.FileInputFormat;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.java.typeutils.TypeExtractor;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.core.fs.FileInputSplit;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.streaming.api.watermark.Watermark;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+import org.apache.flink.streaming.util.OneInputStreamOperatorTestHarness;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
+
+public class FileSplitMonitoringFunctionTest {
+
+ private static final int NO_OF_FILES = 10;
+ private static final int LINES_PER_FILE = 10;
+
+ private static final long INTERVAL = 200;
+
+ private File baseDir;
+
+ private org.apache.hadoop.fs.FileSystem hdfs;
+ private String hdfsURI;
+ private MiniDFSCluster hdfsCluster;
+
+ private Set<org.apache.hadoop.fs.Path> hdPaths = new HashSet<>();
+ private Set<String> hdPathNames = new HashSet<>();
+ private Map<Integer, String> hdPathContents = new HashMap<>();
+
+ // PREPARING FOR THE TESTS
+
+ @Before
+ public void createHDFS() {
+ try {
+ baseDir = new
File("./target/hdfs/hdfsTesting").getAbsoluteFile();
+ FileUtil.fullyDelete(baseDir);
+
+ org.apache.hadoop.conf.Configuration hdConf = new
org.apache.hadoop.conf.Configuration();
+ hdConf.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR,
baseDir.getAbsolutePath());
+ hdConf.set("dfs.block.size", String.valueOf(1048576));
// this is the minimum we can set.
+
+ MiniDFSCluster.Builder builder = new
MiniDFSCluster.Builder(hdConf);
+ hdfsCluster = builder.build();
+
+ hdfsURI = "hdfs://" + hdfsCluster.getURI().getHost() +
":" + hdfsCluster.getNameNodePort() +"/";
+ hdfs = new
org.apache.hadoop.fs.Path(hdfsURI).getFileSystem(hdConf);
+
+ } catch(Throwable e) {
+ e.printStackTrace();
+ Assert.fail("Test failed " + e.getMessage());
+ }
+ }
+
+ @After
+ public void destroyHDFS() {
+ try {
+ for(org.apache.hadoop.fs.Path file: hdPaths) {
+ hdfs.delete(file, false);
+ }
+ FileUtil.fullyDelete(baseDir);
+ hdfsCluster.shutdown();
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ // END OF PREPARATIONS
+
+ // TESTS
+
+ @Test
+ public void testFileContents() throws IOException {
--- End diff --
this test doesn't test anything in regards to the MonitoringFunction, does
it?
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