From 0ee44c225e38abbf3382be6e9555ab9a35424a54 Mon Sep 17 00:00:00 2001
From: Denny <dennybritz@gmail.com>
Date: Wed, 1 Aug 2012 13:17:31 -0700
Subject: Spark standalone mode cluster scripts. Heavily inspired by Hadoop
 cluster scripts ;-)

---
 bin/spark-daemon.sh | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100755 bin/spark-daemon.sh

(limited to 'bin/spark-daemon.sh')

diff --git a/bin/spark-daemon.sh b/bin/spark-daemon.sh
new file mode 100755
index 0000000000..b5ecd9c1a2
--- /dev/null
+++ b/bin/spark-daemon.sh
@@ -0,0 +1,135 @@
+#!/usr/bin/env bash
+
+# Runs a Spark command as a daemon.
+#
+# Environment Variables
+#
+#   SPARK_CONF_DIR  Alternate conf dir. Default is ${SPARK_PREFIX}/conf.
+#   SPARK_LOG_DIR   Where log files are stored.  PWD by default.
+#   SPARK_MASTER    host:path where spark code should be rsync'd from
+#   SPARK_PID_DIR   The pid files are stored. /tmp by default.
+#   SPARK_IDENT_STRING   A string representing this instance of spark. $USER by default
+#   SPARK_NICENESS The scheduling priority for daemons. Defaults to 0.
+##
+
+usage="Usage: spark-daemon.sh [--config <conf-dir>] [--hosts hostlistfile] (start|stop) <spark-command> <args...>"
+
+# if no args specified, show usage
+if [ $# -le 1 ]; then
+  echo $usage
+  exit 1
+fi
+
+bin=`dirname "$0"`
+bin=`cd "$bin"; pwd`
+
+. "$bin/spark-config.sh"
+
+# get arguments
+startStop=$1
+shift
+command=$1
+shift
+
+spark_rotate_log ()
+{
+    log=$1;
+    num=5;
+    if [ -n "$2" ]; then
+	num=$2
+    fi
+    if [ -f "$log" ]; then # rotate logs
+	while [ $num -gt 1 ]; do
+	    prev=`expr $num - 1`
+	    [ -f "$log.$prev" ] && mv "$log.$prev" "$log.$num"
+	    num=$prev
+	done
+	mv "$log" "$log.$num";
+    fi
+}
+
+if [ -f "${SPARK_CONF_DIR}/spark-env.sh" ]; then
+  . "${SPARK_CONF_DIR}/spark-env.sh"
+fi
+
+if [ "$SPARK_IDENT_STRING" = "" ]; then
+  export SPARK_IDENT_STRING="$USER"
+fi
+
+# get log directory
+if [ "$SPARK_LOG_DIR" = "" ]; then
+  export SPARK_LOG_DIR="$SPARK_HOME/logs"
+fi
+mkdir -p "$SPARK_LOG_DIR"
+touch $SPARK_LOG_DIR/.spark_test > /dev/null 2>&1
+TEST_LOG_DIR=$?
+if [ "${TEST_LOG_DIR}" = "0" ]; then
+  rm -f $SPARK_LOG_DIR/.spark_test
+else
+  chown $SPARK_IDENT_STRING $SPARK_LOG_DIR 
+fi
+
+if [ "$SPARK_PID_DIR" = "" ]; then
+  SPARK_PID_DIR=/tmp
+fi
+
+# some variables
+export SPARK_LOGFILE=spark-$SPARK_IDENT_STRING-$command-$HOSTNAME.log
+export SPARK_ROOT_LOGGER="INFO,DRFA"
+log=$SPARK_LOG_DIR/spark-$SPARK_IDENT_STRING-$command-$HOSTNAME.out
+pid=$SPARK_PID_DIR/spark-$SPARK_IDENT_STRING-$command.pid
+
+# Set default scheduling priority
+if [ "$SPARK_NICENESS" = "" ]; then
+    export SPARK_NICENESS=0
+fi
+
+
+case $startStop in
+
+  (start)
+    
+    mkdir -p "$SPARK_PID_DIR"
+
+    if [ -f $pid ]; then
+      if kill -0 `cat $pid` > /dev/null 2>&1; then
+        echo $command running as process `cat $pid`.  Stop it first.
+        exit 1
+      fi
+    fi
+
+    if [ "$SPARK_MASTER" != "" ]; then
+      echo rsync from $SPARK_MASTER
+      rsync -a -e ssh --delete --exclude=.svn --exclude='logs/*' --exclude='contrib/hod/logs/*' $SPARK_MASTER/ "$SPARK_HOME"
+    fi
+
+    spark_rotate_log $log
+    echo starting $command, logging to $log
+    cd "$SPARK_PREFIX"
+    nohup nice -n $SPARK_NICENESS "$SPARK_PREFIX"/run $command "$@" > "$log" 2>&1 < /dev/null &
+    echo $! > $pid
+    sleep 1; head "$log"
+    ;;
+          
+  (stop)
+
+    if [ -f $pid ]; then
+      if kill -0 `cat $pid` > /dev/null 2>&1; then
+        echo stopping $command
+        kill `cat $pid`
+      else
+        echo no $command to stop
+      fi
+    else
+      echo no $command to stop
+    fi
+    ;;
+
+  (*)
+    echo $usage
+    exit 1
+    ;;
+
+esac
+
+
-- 
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