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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.
#
#
# Shell script for starting the Spark Shell REPL
args="$@"
cygwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
esac
# Enter posix mode for bash
set -o posix
if [[ "$@" == *--help* ]]; then
echo "Usage: ./bin/spark-shell [options]"
./bin/spark-submit --help 2>&1 | grep -v Usage 1>&2
exit 0
fi
## Global script variables
FWDIR="$(cd `dirname $0`/..; pwd)"
function main(){
if $cygwin; then
# Workaround for issue involving JLine and Cygwin
# (see http://sourceforge.net/p/jline/bugs/40/).
# If you're using the Mintty terminal emulator in Cygwin, may need to set the
# "Backspace sends ^H" setting in "Keys" section of the Mintty options
# (see https://github.com/sbt/sbt/issues/562).
stty -icanon min 1 -echo > /dev/null 2>&1
export SPARK_REPL_OPTS="$SPARK_REPL_OPTS -Djline.terminal=unix"
$FWDIR/bin/spark-submit spark-internal "$args" --class org.apache.spark.repl.Main
stty icanon echo > /dev/null 2>&1
else
export SPARK_REPL_OPTS
$FWDIR/bin/spark-submit spark-internal "$args" --class org.apache.spark.repl.Main
fi
}
# Copy restore-TTY-on-exit functions from Scala script so spark-shell exits properly even in
# binary distribution of Spark where Scala is not installed
exit_status=127
saved_stty=""
# restore stty settings (echo in particular)
function restoreSttySettings() {
stty $saved_stty
saved_stty=""
}
function onExit() {
if [[ "$saved_stty" != "" ]]; then
restoreSttySettings
fi
exit $exit_status
}
# to reenable echo if we are interrupted before completing.
trap onExit INT
# save terminal settings
saved_stty=$(stty -g 2>/dev/null)
# clear on error so we don't later try to restore them
if [[ ! $? ]]; then
saved_stty=""
fi
main
# record the exit status lest it be overwritten:
# then reenable echo and propagate the code.
exit_status=$?
onExit
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