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https://issues.apache.org/jira/browse/YARN-6061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847477#comment-15847477
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ASF GitHub Bot commented on YARN-6061:
--------------------------------------
Github user flyrain commented on a diff in the pull request:
https://github.com/apache/hadoop/pull/182#discussion_r98765429
--- Diff:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMCriticalThreadUncaughtExceptionHandler.java
---
@@ -0,0 +1,75 @@
+/**
+ * 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.hadoop.yarn.server.resourcemanager;
+
+import org.apache.hadoop.util.ExitUtil;
+import org.apache.hadoop.yarn.event.AsyncDispatcher;
+import org.junit.Test;
+
+import static org.junit.Assert.assertSame;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+/**
+ * This class is to test {@link RMCriticalThreadUncaughtExceptionHandler}.
+ */
+public class TestRMCriticalThreadUncaughtExceptionHandler {
+ /**
+ * Throw {@link RuntimeException} inside thread and
+ * check {@link RMCriticalThreadUncaughtExceptionHandler} instance.
+ *
+ * Used {@link ExitUtil} class to avoid jvm exit through
+ * {@code System.exit(-1)}.
+ *
+ * @throws InterruptedException if any
+ */
+ @Test
+ public void testUncaughtExceptionHandlerWithError()
+ throws InterruptedException {
+ ExitUtil.disableSystemExit();
+
+ // Create a MockRM and start it
+ ResourceManager resourceManager = new MockRM();
--- End diff --
Add one unit test to check if RM transition to standby.
> Add a customized uncaughtexceptionhandler for critical threads in RM
> --------------------------------------------------------------------
>
> Key: YARN-6061
> URL: https://issues.apache.org/jira/browse/YARN-6061
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Reporter: Yufei Gu
> Assignee: Yufei Gu
> Attachments: YARN-6061.001.patch, YARN-6061.002.patch,
> YARN-6061.003.patch
>
>
> There are several threads in fair scheduler. The thread will quit when there
> is a runtime exception inside it. We should bring down the RM when that
> happens. Otherwise, there may be some weird behavior in RM.
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