#!/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. # # Starts a slave on the machine this script is executed on. # # Environment Variables # # SPARK_WORKER_INSTANCES The number of worker instances to run on this # slave. Default is 1. # SPARK_WORKER_PORT The base port number for the first worker. If set, # subsequent workers will increment this number. If # unset, Spark will find a valid port number, but # with no guarantee of a predictable pattern. # SPARK_WORKER_WEBUI_PORT The base port for the web interface of the first # worker. Subsequent workers will increment this # number. Default is 8081. if [ -z "${SPARK_HOME}" ]; then export SPARK_HOME="$(cd "`dirname "$0"`"/..; pwd)" fi # NOTE: This exact class name is matched downstream by SparkSubmit. # Any changes need to be reflected there. CLASS="org.apache.spark.deploy.worker.Worker" if [[ $# -lt 1 ]] || [[ "$@" = *--help ]] || [[ "$@" = *-h ]]; then echo "Usage: ./sbin/run-slave.sh [options] <master>" pattern="Usage:" pattern+="\|Using Spark's default log4j profile:" pattern+="\|Registered signal handlers for" "${SPARK_HOME}"/bin/spark-class $CLASS --help 2>&1 | grep -v "$pattern" 1>&2 exit 1 fi . "${SPARK_HOME}/sbin/spark-config.sh" . "${SPARK_HOME}/bin/load-spark-env.sh" # First argument should be the master; we need to store it aside because we may # need to insert arguments between it and the other arguments MASTER=$1 shift # Determine desired worker port if [ "$SPARK_WORKER_WEBUI_PORT" = "" ]; then SPARK_WORKER_WEBUI_PORT=8081 fi # Start up the appropriate number of workers on this machine. # quick local function to start a worker function start_instance { WORKER_NUM=$1 shift if [ "$SPARK_WORKER_PORT" = "" ]; then PORT_FLAG= PORT_NUM= else PORT_FLAG="--port" PORT_NUM=$(( $SPARK_WORKER_PORT + $WORKER_NUM - 1 )) fi WEBUI_PORT=$(( $SPARK_WORKER_WEBUI_PORT + $WORKER_NUM - 1 )) "${SPARK_HOME}/sbin"/spark-daemon-run.sh start $CLASS $WORKER_NUM \ --webui-port "$WEBUI_PORT" $PORT_FLAG $PORT_NUM $MASTER "$@" } if [ "$SPARK_WORKER_INSTANCES" = "" ]; then start_instance 1 "$@" else for ((i=0; i<$SPARK_WORKER_INSTANCES; i++)); do start_instance $(( 1 + $i )) "$@" done fi