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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.
#
# Runs a Spark command as a daemon.
#
# Environment Variables
#
# SPARK_CONF_DIR Alternate conf dir. Default is ${SPARK_HOME}/conf.
# SPARK_LOG_DIR Where log files are stored. ${SPARK_HOME}/logs by default.
# SPARK_MASTER host:path where spark code should be rsync'd from
# SPARK_PID_DIR The pid files are stored. /tmp by default.
# SPARK_IDENT_STRING A string representing this instance of spark. $USER by default
# SPARK_NICENESS The scheduling priority for daemons. Defaults to 0.
##
usage="Usage: spark-daemon.sh [--config <conf-dir>] (start|stop) <spark-command> <spark-instance-number> <args...>"
# if no args specified, show usage
if [ $# -le 1 ]; then
echo $usage
exit 1
fi
sbin="`dirname "$0"`"
sbin="`cd "$sbin"; pwd`"
. "$sbin/spark-config.sh"
# get arguments
# Check if --config is passed as an argument. It is an optional parameter.
# Exit if the argument is not a directory.
if [ "$1" == "--config" ]
then
shift
conf_dir="$1"
if [ ! -d "$conf_dir" ]
then
echo "ERROR : $conf_dir is not a directory"
echo $usage
exit 1
else
export SPARK_CONF_DIR="$conf_dir"
fi
shift
fi
option=$1
shift
command=$1
shift
instance=$1
shift
spark_rotate_log ()
{
log=$1;
num=5;
if [ -n "$2" ]; then
num=$2
fi
if [ -f "$log" ]; then # rotate logs
while [ $num -gt 1 ]; do
prev=`expr $num - 1`
[ -f "$log.$prev" ] && mv "$log.$prev" "$log.$num"
num=$prev
done
mv "$log" "$log.$num";
fi
}
. "$SPARK_PREFIX/bin/load-spark-env.sh"
if [ "$SPARK_IDENT_STRING" = "" ]; then
export SPARK_IDENT_STRING="$USER"
fi
export SPARK_PRINT_LAUNCH_COMMAND="1"
# get log directory
if [ "$SPARK_LOG_DIR" = "" ]; then
export SPARK_LOG_DIR="$SPARK_HOME/logs"
fi
mkdir -p "$SPARK_LOG_DIR"
touch "$SPARK_LOG_DIR"/.spark_test > /dev/null 2>&1
TEST_LOG_DIR=$?
if [ "${TEST_LOG_DIR}" = "0" ]; then
rm -f "$SPARK_LOG_DIR"/.spark_test
else
chown "$SPARK_IDENT_STRING" "$SPARK_LOG_DIR"
fi
if [ "$SPARK_PID_DIR" = "" ]; then
SPARK_PID_DIR=/tmp
fi
# some variables
log="$SPARK_LOG_DIR/spark-$SPARK_IDENT_STRING-$command-$instance-$HOSTNAME.out"
pid="$SPARK_PID_DIR/spark-$SPARK_IDENT_STRING-$command-$instance.pid"
# Set default scheduling priority
if [ "$SPARK_NICENESS" = "" ]; then
export SPARK_NICENESS=0
fi
case $option in
(start|spark-submit)
mkdir -p "$SPARK_PID_DIR"
if [ -f $pid ]; then
TARGET_ID="$(cat "$pid")"
if [[ $(ps -p "$TARGET_ID" -o args=) =~ $command ]]; then
echo "$command running as process $TARGET_ID. Stop it first."
exit 1
fi
fi
if [ "$SPARK_MASTER" != "" ]; then
echo rsync from "$SPARK_MASTER"
rsync -a -e ssh --delete --exclude=.svn --exclude='logs/*' --exclude='contrib/hod/logs/*' $SPARK_MASTER/ "$SPARK_HOME"
fi
spark_rotate_log "$log"
echo "starting $command, logging to $log"
if [ $option == spark-submit ]; then
source "$SPARK_HOME"/bin/utils.sh
gatherSparkSubmitOpts "$@"
nohup nice -n $SPARK_NICENESS "$SPARK_PREFIX"/bin/spark-submit --class $command \
"${SUBMISSION_OPTS[@]}" spark-internal "${APPLICATION_OPTS[@]}" >> "$log" 2>&1 < /dev/null &
else
nohup nice -n $SPARK_NICENESS "$SPARK_PREFIX"/bin/spark-class $command "$@" >> "$log" 2>&1 < /dev/null &
fi
newpid=$!
echo $newpid > $pid
sleep 2
# Check if the process has died; in that case we'll tail the log so the user can see
if [[ ! $(ps -p "$newpid" -o args=) =~ $command ]]; then
echo "failed to launch $command:"
tail -2 "$log" | sed 's/^/ /'
echo "full log in $log"
fi
;;
(stop)
if [ -f $pid ]; then
TARGET_ID="$(cat "$pid")"
if [[ $(ps -p "$TARGET_ID" -o comm=) =~ "java" ]]; then
echo "stopping $command"
kill "$TARGET_ID"
else
echo "no $command to stop"
fi
else
echo "no $command to stop"
fi
;;
(*)
echo $usage
exit 1
;;
esac
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