| #!/usr/bin/env python |
| """ |
| 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. |
| |
| """ |
| |
| from resource_management.core.resources.system import Execute, File |
| from resource_management.libraries.functions.format import format |
| |
| def hbase_service( |
| name, |
| action = 'start'): # 'start' or 'stop' or 'status' |
| |
| import params |
| |
| role = name |
| cmd = format("{daemon_script} --config {hbase_conf_dir}") |
| pid_file = format("{hbase_pid_dir}/hbase-{hbase_user}-{role}.pid") |
| no_op_test = format("ls {pid_file} >/dev/null 2>&1 && ps `cat {pid_file}` >/dev/null 2>&1") |
| |
| if action == 'start': |
| |
| daemon_cmd = format("{cmd} start {role}") |
| |
| Execute ( daemon_cmd, |
| not_if = no_op_test, |
| user = params.hbase_user |
| ) |
| elif action == 'stop': |
| daemon_cmd = format("{cmd} stop {role}") |
| |
| Execute ( daemon_cmd, |
| user = params.hbase_user, |
| # BUGFIX: hbase regionserver sometimes hangs when nn is in safemode |
| timeout = params.hbase_regionserver_shutdown_timeout, |
| on_timeout = format("{no_op_test} && {sudo} -H -E kill -9 `{sudo} cat {pid_file}`") |
| ) |
| |
| File(pid_file, |
| action = "delete", |
| ) |