Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/19591#discussion_r158560723
--- Diff:
launcher/src/main/java/org/apache/spark/launcher/InProcessAppHandle.java ---
@@ -0,0 +1,74 @@
+/*
+ * 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.launcher;
+
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.util.concurrent.ThreadFactory;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+class InProcessAppHandle extends AbstractAppHandle {
+
+ private static final Logger LOG =
Logger.getLogger(ChildProcAppHandle.class.getName());
+ private static final ThreadFactory THREAD_FACTORY = new
NamedThreadFactory("spark-app-%d");
+
+ private Thread app;
+
+ InProcessAppHandle(LauncherServer server) {
+ super(server);
+ }
+
+ @Override
+ public synchronized void kill() {
+ LOG.warning("kill() may leave the underlying app running in in-process
mode.");
+ disconnect();
+
+ // Interrupt the thread. This is not guaranteed to kill the app,
though.
--- End diff --
ok, just a misunderstanding then. that is what I thought I was saying in
the first place.
anyway, I guess we can leave the warning here for now in all cases and see
if we get any reports from users in cluster mode ...
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