001/** 002* Licensed to the Apache Software Foundation (ASF) under one 003* or more contributor license agreements. See the NOTICE file 004* distributed with this work for additional information 005* regarding copyright ownership. The ASF licenses this file 006* to you under the Apache License, Version 2.0 (the 007* "License"); you may not use this file except in compliance 008* with the License. You may obtain a copy of the License at 009* 010* http://www.apache.org/licenses/LICENSE-2.0 011* 012* Unless required by applicable law or agreed to in writing, software 013* distributed under the License is distributed on an "AS IS" BASIS, 014* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015* See the License for the specific language governing permissions and 016* limitations under the License. 017*/ 018 019package org.apache.hadoop.yarn.api.records; 020 021import org.apache.hadoop.classification.InterfaceAudience.Public; 022import org.apache.hadoop.classification.InterfaceStability.Evolving; 023 024/** 025 * Enumeration of various signal container commands. 026 */ 027@Public 028@Evolving 029public enum SignalContainerCommand { 030 /** 031 * Used to capture thread dump. 032 * On Linux, it is equivalent to SIGQUIT. 033 */ 034 OUTPUT_THREAD_DUMP, 035 036 /** Gracefully shutdown a container. 037 * On Linux, it is equivalent to SIGTERM. 038 */ 039 GRACEFUL_SHUTDOWN, 040 041 /** Forcefully shutdown a container. 042 * On Linux, it is equivalent to SIGKILL. 043 */ 044 FORCEFUL_SHUTDOWN, 045}