Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/6199#discussion_r197279905
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/client/ClientUtils.java ---
@@ -0,0 +1,96 @@
+/*
+ * 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.runtime.client;
+
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.api.common.cache.DistributedCache;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.runtime.blob.BlobClient;
+import org.apache.flink.runtime.blob.PermanentBlobKey;
+import org.apache.flink.runtime.jobgraph.JobGraph;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+
+/**
+ * Contains utility methods for clients.
+ */
+public enum ClientUtils {
+ ;
+
+ /**
+ * Uploads the user jars from the given {@link JobGraph} using the
given {@link BlobClient},
+ * and sets the appropriate blobkeys.
+ *
+ * @param jobGraph jobgraph requiring user jars
+ * @param blobClient client to upload jars with
+ * @throws IOException if the upload fails
+ */
+ public static void uploadAndSetUserJars(JobGraph jobGraph, BlobClient
blobClient) throws IOException {
--- End diff --
`JarRunHandler` could use this method as well.
---
