[FLINK-30299][core] Adds thread dump creation to FatalExitExceptionHa…

…ndler

Signed-off-by: Matthias Pohl <[email protected]>

flink-core/src/main/java/org/apache/flink/util/FatalExitExceptionHandler.java

@@ -19,6 +19,7 @@
 package org.apache.flink.util;
 
 import org.apache.flink.core.security.FlinkSecurityManager;
+import org.apache.flink.util.concurrent.ThreadUtils;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -43,6 +44,7 @@ public void uncaughtException(Thread t, Throwable e) {
  "FATAL: Thread '{}' produced an uncaught exception. Stopping the process...",
  t.getName(),
  e);
+ ThreadUtils.errorLogThreadDump(LOG);
  } finally {
  FlinkSecurityManager.forceProcessExit(EXIT_CODE);
  }

flink-core/src/main/java/org/apache/flink/util/concurrent/ThreadUtils.java

@@ -0,0 +1,38 @@
+/*
+ * 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:https://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.util.concurrent;
+
+import org.slf4j.Logger;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+/** {@code ThreadUtils} collects helper methods in the context of threading. */
+public class ThreadUtils {
+
+ public static void errorLogThreadDump(Logger logger) {
+ final ThreadInfo[] perThreadInfo =
+ ManagementFactory.getThreadMXBean().dumpAllThreads(true, true);
+ logger.error(
+ "Thread dump: \n{}",
+ Arrays.stream(perThreadInfo).map(Object::toString).collect(Collectors.joining()));
+ }
+}