[flink] branch master updated: [FLINK-30299][core] Adds thread dump creation to FatalExitExceptionHandler

[mapohl]

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mapohl pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git


The following commit(s) were added to refs/heads/master by this push:
     new 49146cdec41 [FLINK-30299][core] Adds thread dump creation to 
FatalExitExceptionHandler
49146cdec41 is described below

commit 49146cdec41467445de5fc81f100585142728bdf
Author: Matthias Pohl <matthias.p...@aiven.io>
AuthorDate: Wed Dec 7 16:57:25 2022 +0100

    [FLINK-30299][core] Adds thread dump creation to FatalExitExceptionHandler
    
    Signed-off-by: Matthias Pohl <matthias.p...@aiven.io>
---
 .../flink/util/FatalExitExceptionHandler.java      |  2 ++
 .../apache/flink/util/concurrent/ThreadUtils.java  | 38 ++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git 
a/flink-core/src/main/java/org/apache/flink/util/FatalExitExceptionHandler.java 
b/flink-core/src/main/java/org/apache/flink/util/FatalExitExceptionHandler.java
index 8ff0e9b7b0a..35b0d733247 100644
--- 
a/flink-core/src/main/java/org/apache/flink/util/FatalExitExceptionHandler.java
+++ 
b/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 final class FatalExitExceptionHandler implements 
Thread.UncaughtException
                     "FATAL: Thread '{}' produced an uncaught exception. 
Stopping the process...",
                     t.getName(),
                     e);
+            ThreadUtils.errorLogThreadDump(LOG);
         } finally {
             FlinkSecurityManager.forceProcessExit(EXIT_CODE);
         }
diff --git 
a/flink-core/src/main/java/org/apache/flink/util/concurrent/ThreadUtils.java 
b/flink-core/src/main/java/org/apache/flink/util/concurrent/ThreadUtils.java
new file mode 100644
index 00000000000..35e3c604f22
--- /dev/null
+++ b/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://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()));
+    }
+}