[AMBARI-2216] Hadoop2: Empty stack configuration values become 'null' on the node

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.4
• Fix Version/s: 1.4.0
• Component/s: ambari-web
• Assignee: Srimanth Gunturi
• Reporter: Srimanth Gunturi
• Created: 29/May/13 08:18
• Updated: 30/May/13 21:48
• Resolved: 30/May/13 21:48

Description

When viewing a new install of Hadoop2 that includes MAPREDUCE2, some properties defined as empty string are sent to the server as 'null':
Stack:

  <property>
    <name>mapred.job.tracker</name>
    <value></value>
  </property>

Server:

  <property>
    <name>mapred.job.tracker</name>
    <value>null</value>
  </property>

The following properties exhibit this behavior:
mapred.system.dir
mapred.cluster.reduce.memory.mb
mapred.hosts
mapred.jobtracker.maxtasks.per.job
mapred.userlog.retain.hours
mapred.local.dir
mapred.task.tracker.task-controller
mapred.tasktracker.map.tasks.maximum
mapred.hosts.exclude
mapred.cluster.max.map.memory.mb
mapred.cluster.max.reduce.memory.mb
mapred.job.tracker.http.address
mapred.jobtracker.taskScheduler
mapred.healthChecker.script.path
mapred.cluster.map.memory.mb