HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@707943 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -56,6 +56,8 @@ Trunk (unreleased changes)
 
     HADOOP-4510. Make getTaskOutputPath public. (Chris Wensel via omalley)
 
+    HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley)
+
   OPTIMIZATIONS
 
   BUG FIXES

bin/slaves.sh

@@ -57,7 +57,7 @@ if [ "$HOSTLIST" = "" ]; then
   fi
 fi
 
-for slave in `cat "$HOSTLIST"`; do
+for slave in `cat "$HOSTLIST"|sed  "s/#.*$//;/^$/d"`; do
  ssh $HADOOP_SSH_OPTS $slave $"${@// /\\ }" \
    2>&1 | sed "s/^/$slave: /" &
  if [ "$HADOOP_SLAVE_SLEEP" != "" ]; then