8aff36e91d
This PR is based on the work of roji to support running Spark scripts from symlinks. Thanks for the great work roji . Would you mind taking a look at this PR, thanks a lot. For releases like HDP and others, normally it will expose the Spark executables as symlinks and put in `PATH`, but current Spark's scripts do not support finding real path from symlink recursively, this will make spark fail to execute from symlink. This PR try to solve this issue by finding the absolute path from symlink. Instead of using `readlink -f` like what this PR (https://github.com/apache/spark/pull/2386) implemented is that `-f` is not support for Mac, so here manually seeking the path through loop. I've tested with Mac and Linux (Cent OS), looks fine. This PR did not fix the scripts under `sbin` folder, not sure if it needs to be fixed also? Please help to review, any comment is greatly appreciated. Author: jerryshao <sshao@hortonworks.com> Author: Shay Rojansky <roji@roji.org> Closes #8669 from jerryshao/SPARK-2960.
104 lines
2.7 KiB
Bash
Executable file
104 lines
2.7 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 $usage
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exit 1
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fi
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if [ -z "${SPARK_HOME}" ]; then
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export SPARK_HOME="$(cd "`dirname "$0"`"/..; pwd)"
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fi
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. "${SPARK_HOME}/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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if [ -f "$SPARK_SLAVES" ]; then
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HOSTLIST=`cat "$SPARK_SLAVES"`
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fi
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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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. "${SPARK_HOME}/bin/load-spark-env.sh"
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if [ "$HOSTLIST" = "" ]; then
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if [ "$SPARK_SLAVES" = "" ]; then
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if [ -f "${SPARK_CONF_DIR}/slaves" ]; then
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HOSTLIST=`cat "${SPARK_CONF_DIR}/slaves"`
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else
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HOSTLIST=localhost
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fi
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else
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HOSTLIST=`cat "${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 [ "$SPARK_SSH_OPTS" = "" ]; then
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SPARK_SSH_OPTS="-o StrictHostKeyChecking=no"
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fi
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for slave in `echo "$HOSTLIST"|sed "s/#.*$//;/^$/d"`; do
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if [ -n "${SPARK_SSH_FOREGROUND}" ]; then
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ssh $SPARK_SSH_OPTS "$slave" $"${@// /\\ }" \
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2>&1 | sed "s/^/$slave: /"
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else
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ssh $SPARK_SSH_OPTS "$slave" $"${@// /\\ }" \
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2>&1 | sed "s/^/$slave: /" &
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fi
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if [ "$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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