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-rw-r--r--MPE/spark/bin/spark-shell95
1 files changed, 95 insertions, 0 deletions
diff --git a/MPE/spark/bin/spark-shell b/MPE/spark/bin/spark-shell
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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
+
+cygwin=false
+case "$(uname)" in
+ CYGWIN*) cygwin=true;;
+esac
+
+# Enter posix mode for bash
+set -o posix
+
+if [ -z "${SPARK_HOME}" ]; then
+ source "$(dirname "$0")"/find-spark-home
+fi
+
+export _SPARK_CMD_USAGE="Usage: ./bin/spark-shell [options]"
+
+# SPARK-4161: scala does not assume use of the java classpath,
+# so we need to add the "-Dscala.usejavacp=true" flag manually. We
+# do this specifically for the Spark shell because the scala REPL
+# has its own class loader, and any additional classpath specified
+# through spark.driver.extraClassPath is not automatically propagated.
+SPARK_SUBMIT_OPTS="$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
+