[AMBARI-4626] "Capacity Scheduler" section in Ambari does not allow ACL value of "user group" with spaces

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.1, 2.0.0
• Fix Version/s: 1.5.0, 2.0.1, 2.1.0
• Component/s: ambari-web
• Assignee: Andrii Tkach
• Reporter: Andrii Tkach
• Created: 12/Feb/14 12:08
• Updated: 20/May/15 12:58
• Resolved: 18/May/15 20:09

Description

PROBLEM: While adding the following properties with spaces through the "Capacity Scheduler" section of Ambari (ambari-server-1.4.1 with HDP 2.0 GA), the values are cutoff from the space onward.

yarn.scheduler.capacity.root.default.acl_administer_jobs=user group
yarn.scheduler.capacity.root.default.acl_submit_jobs= group

yarn.scheduler.capacity.root.acl_administer_queue=
yarn.scheduler.capacity.root.acl_administer_queue=

So the objective is:

<property>
<name>yarn.scheduler.capacity.root.acl_submit_applications</name>
<value> </value>
</property>

<property>
<name>yarn.scheduler.capacity.root.acl_administer_queue</name>
<value> </value>
</property>

<property>
<name>yarn.scheduler.capacity.root.default.acl_administer_queue</name>
<value>user group</value>
</property>

<property>
<name>yarn.scheduler.capacity.root.default.acl_submit_applications</name>
<value> group</value>
</property>

The space is needed to use the format per
http://hadoop.apache.org/docs/r2.2.0/hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html

"Note: An ACL is of the form user1, user2spacegroup1, group2."

STEPS TO REPRODUCE:
1. Go to Yarn configs in Ambari.
2. Try to add the property

yarn.scheduler.capacity.root.acl_submit_applications=user1 group1

3. Save the property, after saving, it will show

yarn.scheduler.capacity.root.acl_submit_applications=user1

4. Also if a property with a value of single space needs to be added like

yarn.scheduler.capacity.root.acl_submit_applications=

after the save, Ambari will no longer show the property in the list or update the capacity-scheduler.xml correctly. I am not sure why Yarn needs a "space" to imply that no one is allowed to submit to the queue.

WORK AROUND: Manually edit capacity-scheduler.xml and
yarn rmadmin -refreshAdminAcls
yarn rmadmin -refreshServiceAcl
yarn rmadmin -refreshQueues

EXPECTED BEHAVIOR: Should be able to specify properties through Ambari.