007a733434
Various spark scripts load spark-env.sh. This can cause growth of any variables that may be appended to (SPARK_CLASSPATH, SPARK_REPL_OPTS) and it makes the precedence order for options specified in spark-env.sh less clear. One use-case for the latter is that we want to set options from the command-line of spark-shell, but these options will be overridden by subsequent loading of spark-env.sh. If we were to load the spark-env.sh first and then set our command-line options, we could guarantee correct precedence order. Note that we use SPARK_CONF_DIR if available to support the sbin/ scripts, which always set this variable from sbin/spark-config.sh. Otherwise, we default to the ../conf/ as usual. Author: Aaron Davidson <aaron@databricks.com> Closes #184 from aarondav/idem and squashes the following commits: e291f91 [Aaron Davidson] Use "private" variables in load-spark-env.sh 8da8360 [Aaron Davidson] Add .sh extension to load-spark-env.sh 93a2471 [Aaron Davidson] SPARK-1286: Make usage of spark-env.sh idempotent
90 lines
2.4 KiB
Bash
Executable file
90 lines
2.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Run a shell command on all slave hosts.
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#
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# Environment Variables
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#
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# SPARK_SLAVES File naming remote hosts.
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# Default is ${SPARK_CONF_DIR}/slaves.
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# SPARK_CONF_DIR Alternate conf dir. Default is ${SPARK_HOME}/conf.
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# SPARK_SLAVE_SLEEP Seconds to sleep between spawning remote commands.
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# SPARK_SSH_OPTS Options passed to ssh when running remote commands.
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##
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usage="Usage: slaves.sh [--config <conf-dir>] command..."
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# if no args specified, show usage
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if [ $# -le 0 ]; then
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echo $usage
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exit 1
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fi
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sbin=`dirname "$0"`
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sbin=`cd "$sbin"; pwd`
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. "$sbin/spark-config.sh"
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# If the slaves file is specified in the command line,
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# then it takes precedence over the definition in
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# spark-env.sh. Save it here.
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HOSTLIST=$SPARK_SLAVES
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# Check if --config is passed as an argument. It is an optional parameter.
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# Exit if the argument is not a directory.
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if [ "$1" == "--config" ]
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then
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shift
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conf_dir=$1
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if [ ! -d "$conf_dir" ]
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then
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echo "ERROR : $conf_dir is not a directory"
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echo $usage
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exit 1
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else
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export SPARK_CONF_DIR=$conf_dir
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fi
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shift
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fi
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. "$SPARK_PREFIX/bin/load-spark-env.sh"
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if [ "$HOSTLIST" = "" ]; then
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if [ "$SPARK_SLAVES" = "" ]; then
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export HOSTLIST="${SPARK_CONF_DIR}/slaves"
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else
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export HOSTLIST="${SPARK_SLAVES}"
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fi
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fi
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# By default disable strict host key checking
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if [ "$SPARK_SSH_OPTS" = "" ]; then
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SPARK_SSH_OPTS="-o StrictHostKeyChecking=no"
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fi
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for slave in `cat "$HOSTLIST"|sed "s/#.*$//;/^$/d"`; do
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ssh $SPARK_SSH_OPTS $slave $"${@// /\\ }" \
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2>&1 | sed "s/^/$slave: /" &
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if [ "$SPARK_SLAVE_SLEEP" != "" ]; then
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sleep $SPARK_SLAVE_SLEEP
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fi
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done
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wait
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