spark-instrumented-optimizer/sbin/start-slave.sh
Gengliang Wang 52f9f66d54 [SPARK-25712][CORE][MINOR] Improve usage message of start-master.sh and start-slave.sh
## What changes were proposed in this pull request?

Currently if we run
```
./sbin/start-master.sh -h
```
We get
```
Usage: ./sbin/start-master.sh [options]
18/10/11 23:38:30 INFO Master: Started daemon with process name: 33907C02TL2JZGTF1
18/10/11 23:38:30 INFO SignalUtils: Registered signal handler for TERM
18/10/11 23:38:30 INFO SignalUtils: Registered signal handler for HUP
18/10/11 23:38:30 INFO SignalUtils: Registered signal handler for INT

Options:
  -i HOST, --ip HOST     Hostname to listen on (deprecated, please use --host or -h)
  -h HOST, --host HOST   Hostname to listen on
  -p PORT, --port PORT   Port to listen on (default: 7077)
  --webui-port PORT      Port for web UI (default: 8080)
  --properties-file FILE Path to a custom Spark properties file.
                         Default is conf/spark-defaults.conf.
```
We can filter out some useless output.

## How was this patch tested?

Manual test

Closes #22700 from gengliangwang/improveStartScript.

Authored-by: Gengliang Wang <gengliang.wang@databricks.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
2018-10-12 12:42:34 -05:00

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#!/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 ]] || [[ "$@" = *-h ]]; then
echo "Usage: ./sbin/start-slave.sh [options] <master>"
pattern="Usage:"
pattern+="\|Using Spark's default log4j profile:"
pattern+="\|Started daemon with process name"
pattern+="\|Registered signal handler for"
"${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.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