| #!/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 |
| |
| cygwin=false |
| case "$(uname)" in |
| CYGWIN*) cygwin=true;; |
| esac |
| |
| # Enter posix mode for bash |
| set -o posix |
| |
| if [ -z "${SPARK_HOME}" ]; then |
| source "$(dirname "$0")"/find-spark-home |
| fi |
| |
| export _SPARK_CMD_USAGE="Usage: ./bin/spark-shell [options] |
| |
| Scala REPL options: |
| -I <file> preload <file>, enforcing line-by-line interpretation" |
| |
| # SPARK-4161: scala does not assume use of the java classpath, |
| # so we need to add the "-Dscala.usejavacp=true" flag manually. We |
| # do this specifically for the Spark shell because the scala REPL |
| # has its own class loader, and any additional classpath specified |
| # through spark.driver.extraClassPath is not automatically propagated. |
| SPARK_SUBMIT_OPTS="$SPARK_SUBMIT_OPTS -Dscala.usejavacp=true" |
| |
| function main() { |
| if $cygwin; then |
| # Workaround for issue involving JLine and Cygwin |
| # (see http://sourceforge.net/p/jline/bugs/40/). |
| # If you're using the Mintty terminal emulator in Cygwin, may need to set the |
| # "Backspace sends ^H" setting in "Keys" section of the Mintty options |
| # (see https://github.com/sbt/sbt/issues/562). |
| stty -icanon min 1 -echo > /dev/null 2>&1 |
| export SPARK_SUBMIT_OPTS="$SPARK_SUBMIT_OPTS -Djline.terminal=unix" |
| "${SPARK_HOME}"/bin/spark-submit --class org.apache.spark.repl.Main --name "Spark shell" "$@" |
| stty icanon echo > /dev/null 2>&1 |
| else |
| export SPARK_SUBMIT_OPTS |
| "${SPARK_HOME}"/bin/spark-submit --class org.apache.spark.repl.Main --name "Spark shell" "$@" |
| 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 |
| |