| # included in all the hadoop scripts with source command |
| # should not be executable directly |
| # also should not be passed any arguments, since we need original $* |
| |
| # resolve links - $0 may be a softlink |
| |
| this="$0" |
| while [ -h "$this" ]; do |
| ls=`ls -ld "$this"` |
| link=`expr "$ls" : '.*-> \(.*\)$'` |
| if expr "$link" : '.*/.*' > /dev/null; then |
| this="$link" |
| else |
| this=`dirname "$this"`/"$link" |
| fi |
| done |
| |
| # convert relative path to absolute path |
| bin=`dirname "$this"` |
| script=`basename "$this"` |
| bin=`cd "$bin"; pwd` |
| this="$bin/$script" |
| |
| # the root of the Hadoop installation |
| export HADOOP_HOME=`dirname "$this"`/.. |
| |
| #check to see if the conf dir is given as an optional argument |
| if [ $# -gt 1 ] |
| then |
| if [ "--config" = "$1" ] |
| then |
| shift |
| confdir=$1 |
| shift |
| HADOOP_CONF_DIR=$confdir |
| fi |
| fi |
| |
| # Allow alternate conf dir location. |
| HADOOP_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_HOME/conf}" |
| |
| #check to see it is specified whether to use the slaves or the |
| # masters file |
| if [ $# -gt 1 ] |
| then |
| if [ "--hosts" = "$1" ] |
| then |
| shift |
| slavesfile=$1 |
| shift |
| export HADOOP_SLAVES="${HADOOP_CONF_DIR}/$slavesfile" |
| fi |
| fi |