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From "Balu Vellanki (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FALCON-1644) Retention : Some feed instances are never deleted by retention jobs.
Date Mon, 30 Nov 2015 19:33:10 GMT
Balu Vellanki created FALCON-1644:
-------------------------------------

             Summary: Retention : Some feed instances are never deleted by retention jobs.
                 Key: FALCON-1644
                 URL: https://issues.apache.org/jira/browse/FALCON-1644
             Project: Falcon
          Issue Type: Bug
          Components: retention
    Affects Versions: 0.8
            Reporter: Balu Vellanki
            Assignee: Balu Vellanki
             Fix For: 0.9


​Here is a sample feed xml.
{code}
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<feed name="rawEmailFeed" description="Raw customer email feed" xmlns="uri:falcon:feed:0.1">
    <tags>externalSystem=USWestEmailServers</tags>
    <groups>churnAnalysisDataPipeline</groups>
    <frequency>hours(1)</frequency>
    <timezone>UTC</timezone>
    <late-arrival cut-off="hours(1)"/>
    <clusters>
        <cluster name="primaryCluster" type="source">
            <validity start="2015-10-30T01:00Z" end="2015-10-30T10:00Z"/>
            <retention limit="hours(10)" action="delete"/>
        </cluster>
    </clusters>
    <locations>
        <location type="data" path="/user/ambari-qa/falcon/demo/primary/input/enron/${YEAR}-${MONTH}-${DAY}-${HOUR}"/>
        <location type="stats" path="/"/>
        <location type="meta" path="/"/>
    </locations>
    <ACL owner="ambari-qa" group="users" permission="0x755"/>
    <schema location="/none" provider="/none"/>
</feed>
{code}

In the above example, the validity time is "the time interval when the feed is valid on this
cluster". After the validity time ends, falcon is not expected to perform any operations on
the feed. The retention job for this feed will be run from validity start time up to validity
end time, and will delete any feed instances older than 10 hours. Some instances of Feed will
never be deleted. In the above example, feed instances at between 2015-10-30T00:00Z and 2015-10-30T10:00Z
will never be deleted.

Ideally, the retention coordinator job should run from "validity start time" up to "validity
end time + retention age limit" to ensure all instances are handled. 



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