Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5580#discussion_r179054280
--- Diff:
flink-end-to-end-tests/flink-distributed-cache-via-blob-test/src/main/java/org/apache/flink/streaming/tests/DistributedCacheViaBlobTestProgram.java
---
@@ -0,0 +1,76 @@
+/*
+ * 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.tests;
+
+import org.apache.flink.api.common.functions.RichMapFunction;
+import org.apache.flink.api.java.utils.ParameterTool;
+import org.apache.flink.core.fs.FileSystem;
+import
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import static java.util.Collections.singletonList;
+
+/**
+ * End-to-end test program for verifying that files are distributed via
BlobServer and later accessible through
+ * DistribitutedCache. We verify that via uploading file and later on
accessing it in map function. To be sure we read
+ * version read from cache, we delete the initial file.
+ */
+public class DistributedCacheViaBlobTestProgram {
+
+ public static void main(String[] args) throws Exception {
+
+ final ParameterTool params = ParameterTool.fromArgs(args);
+
+ final String fileContent = params.getRequired("content");
+ final String tempDir = params.getRequired("tempDir");
+
+ final File tempFile = File.createTempFile("temp", null, new
File(tempDir));
--- End diff --
use a random name instead, in case the tempDir isn't randomized.
---
