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# Turn on debug mode if neccesary
debug_file="$bin/hadoop.debug"
is_debug_enabled()
{
if [ -f $debug_file ]; then
cat $debug_file | grep $1 >/dev/null 2>&1
fi
}

case "$COMMAND" in
  namenode)
  DEBUG_PORT=11000
  ;;
datanode)
  DEBUG_PORT=11001
  ;;
jobtracker)
  DEBUG_PORT=11002
  ;;
tasktracker)
  DEBUG_PORT=11003
  ;;
secondarynamenode)
  DEBUG_PORT=11004
  ;;
esac

if is_debug_enabled $COMMAND && [ ! -z $DEBUG_PORT ]; then
echo "debug for $COMMAND is enabled, port is $DEBUG_PORT"
HADOOP_OPTS="$HADOOP_OPTS -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=$DEBUG_PORT,suspend=y,server=y"
fi