Retention does not work?

[Peng Zhang]

Hi Falcon Devs,

I run the example apps in the src package and the work flow does work well. 
However, after successfully finishing the job, I did’t see any retention job 
scheduled neither does my input and output path get deleted.  Attachment is the 
sample in-feed.xml I have. In addition, I can not see any errors in ooze 
log/job logs. Could you please help me figure out what the problem might be?
Thanks in advance.

Best,
Peng

feed description="input" name="in" xmlns="uri:falcon:feed:0.1">
    <groups>input</groups>

    <frequency>minutes(1)</frequency>
    <timezone>UTC</timezone>
    <late-arrival cut-off="minutes(3)"/>

    <clusters>
        <cluster name="local">
            <validity start="2013-11-15T00:00Z" end="2013-11-15T00:50Z"/>
            <retention limit="minutes(15)" action="delete"/>
        </cluster>
    </clusters>

    <locations>
        <location type="data" 
path="/data/in/${YEAR}/${MONTH}/${DAY}/${HOUR}/${MINUTE}"/>
    </locations>

    <ACL owner="pengzhang" group="hdfs" permission="0x777"/>
    <schema location="/schema/log/log.format.csv" provider="csv"/>
    <properties>