added && instead of ;

hadoop/roles/common/tasks/common.yml

@@ -17,10 +17,7 @@
   template: src=etc/hosts.j2 dest=/etc/hosts
 
 - name: Disable SELinux in conf file
-  lineinfile: dest=/etc/sysconfig/selinux regexp='^SELINUX=' line='SELINUX=disabled' state=present
-
-- name: Disable SELinux dynamically
-  shell: creates=/etc/sysconfig/selinux.disabled setenforce 0 ; touch /etc/sysconfig/selinux.disabled
+  selinux: state=disabled
 
 - name: Create the iptables file for all machines
   template: src=iptables.j2 dest=/etc/sysconfig/iptables

hadoop/roles/hadoop_primary/tasks/hadoop_master.yml

@@ -32,7 +32,7 @@
   with_items: hadoop.mapred_job_tracker_persist_jobstatus_dir
 
 - name: Format the namenode
-  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -format"; touch /usr/lib/hadoop/namenode.formatted
+  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -format" && touch /usr/lib/hadoop/namenode.formatted
 
 - name: start hadoop namenode services
   service: name=hadoop-hdfs-namenode state=started

hadoop/roles/hadoop_primary/tasks/hadoop_master_no_ha.yml

@@ -26,13 +26,13 @@
   with_items: hadoop.dfs_namenode_name_dir
 
 - name: Format the namenode
-  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -format"; touch /usr/lib/hadoop/namenode.formatted
+  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -format" && touch /usr/lib/hadoop/namenode.formatted
 
 - name: start hadoop namenode services
   service: name=hadoop-hdfs-namenode state=started
 
 - name: Give permissions for mapred users
-  shell: creates=/usr/lib/hadoop/namenode.initialized su - hdfs -c "hadoop fs -chown hdfs:hadoop /"; su - hdfs -c "hadoop fs -chmod 0775 /"; touch /usr/lib/hadoop/namenode.initialized
+  shell: creates=/usr/lib/hadoop/namenode.initialized su - hdfs -c "hadoop fs -chown hdfs:hadoop /"; su - hdfs -c "hadoop fs -chmod 0775 /" && touch /usr/lib/hadoop/namenode.initialized
 
 - name: start hadoop jobtracker services
   service: name=hadoop-0.20-mapreduce-jobtracker state=started

hadoop/roles/hadoop_secondary/tasks/main.yml

@@ -34,13 +34,13 @@
 
 
 - name: Initialize the secodary namenode
-  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -bootstrapStandby"; touch /usr/lib/hadoop/namenode.formatted
+  shell: creates=/usr/lib/hadoop/namenode.formatted su - hdfs -c "hadoop namenode -bootstrapStandby" && touch /usr/lib/hadoop/namenode.formatted
 
 - name: start hadoop namenode services
   service: name=hadoop-hdfs-namenode state=started
 
 - name: Initialize the zkfc for namenode
-  shell: creates=/usr/lib/hadoop/zkfc.formatted su - hdfs -c "hdfs zkfc -formatZK"; touch /usr/lib/hadoop/zkfc.formatted
+  shell: creates=/usr/lib/hadoop/zkfc.formatted su - hdfs -c "hdfs zkfc -formatZK" && touch /usr/lib/hadoop/zkfc.formatted
 
 - name: start zkfc for namenodes
   service: name=hadoop-hdfs-zkfc state=started
@@ -48,10 +48,10 @@
   with_items: groups.hadoop_masters
 
 - name: Give permissions for mapred users
-  shell: creates=/usr/lib/hadoop/fs.initialized su - hdfs -c "hadoop fs -chown hdfs:hadoop /"; su - hdfs -c "hadoop fs -chmod 0774 /"; touch /usr/lib/hadoop/namenode.initialized
+  shell: creates=/usr/lib/hadoop/fs.initialized su - hdfs -c "hadoop fs -chown hdfs:hadoop /"; su - hdfs -c "hadoop fs -chmod 0774 /" && touch /usr/lib/hadoop/namenode.initialized
 
 - name: Initialize the zkfc for jobtracker
-  shell: creates=/usr/lib/hadoop/zkfcjob.formatted su - mapred -c "hadoop mrzkfc -formatZK"; touch /usr/lib/hadoop/zkfcjob.formatted
+  shell: creates=/usr/lib/hadoop/zkfcjob.formatted su - mapred -c "hadoop mrzkfc -formatZK" && touch /usr/lib/hadoop/zkfcjob.formatted
 
 - name: start zkfc for jobtracker 
   service: name=hadoop-0.20-mapreduce-zkfc state=started