| #!/usr/bin/env bash |
| |
| # 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. |
| |
| |
| # Run a shell command on all worker hosts. |
| # |
| # Environment Variables |
| # |
| # HADOOP_WORKERS File naming remote hosts. |
| # Default is ${HADOOP_CONF_DIR}/workers. |
| # HADOOP_CONF_DIR Alternate conf dir. Default is ${HADOOP_HOME}/conf. |
| # HADOOP_WORKER_SLEEP Seconds to sleep between spawning remote commands. |
| # HADOOP_SSH_OPTS Options passed to ssh when running remote commands. |
| ## |
| |
| function hadoop_usage |
| { |
| echo "Usage: workers.sh [--config confdir] command..." |
| } |
| |
| # let's locate libexec... |
| if [[ -n "${HADOOP_HOME}" ]]; then |
| HADOOP_DEFAULT_LIBEXEC_DIR="${HADOOP_HOME}/libexec" |
| else |
| this="${BASH_SOURCE-$0}" |
| bin=$(cd -P -- "$(dirname -- "${this}")" >/dev/null && pwd -P) |
| HADOOP_DEFAULT_LIBEXEC_DIR="${bin}/../libexec" |
| fi |
| |
| HADOOP_LIBEXEC_DIR="${HADOOP_LIBEXEC_DIR:-$HADOOP_DEFAULT_LIBEXEC_DIR}" |
| # shellcheck disable=SC2034 |
| HADOOP_NEW_CONFIG=true |
| if [[ -f "${HADOOP_LIBEXEC_DIR}/hadoop-config.sh" ]]; then |
| . "${HADOOP_LIBEXEC_DIR}/hadoop-config.sh" |
| else |
| echo "ERROR: Cannot execute ${HADOOP_LIBEXEC_DIR}/hadoop-config.sh." 2>&1 |
| exit 1 |
| fi |
| |
| # if no args specified, show usage |
| if [[ $# -le 0 ]]; then |
| hadoop_exit_with_usage 1 |
| fi |
| |
| hadoop_connect_to_hosts "$@" |