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  1. Falcon
  2. FALCON-2023

Feed eviction fails when feed locations "stats" and "meta" does not have time pattern.

Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • 0.9
    • trunk, 0.10
    • feed
    • None

    Description

      Submit a feed

      <?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="days(90)" 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="/tmp"/>
              <location type="meta" path="/tmp"/>
          </locations>
          <ACL owner="ambari-qa" group="users" permission="0x755"/>
          <schema location="/none" provider="/none"/>
      </feed>
      

      Notice how "stats" and "meta" does not have time pattern. Both stats and meta location are optional, and if they dont have timed pattern - it should not lead to failure in feed eviction. But feed eviction fails with following error.

      Caused by: org.apache.falcon.FalconException: Couldn't evict feed from fileSystem
      	at org.apache.falcon.entity.FileSystemStorage.evict(FileSystemStorage.java:306)
      	at org.apache.falcon.retention.FeedEvictor.run(FeedEvictor.java:76)
      	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
      	at org.apache.falcon.retention.FeedEvictor.main(FeedEvictor.java:52)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:497)
      	at org.apache.oozie.action.hadoop.JavaMain.run(JavaMain.java:56)
      	... 15 more
      Caused by: java.io.IOException: Unable to resolve pattern for feedPath: /tmp
      	at org.apache.falcon.entity.FeedHelper.getFeedBasePath(FeedHelper.java:442)
      	at org.apache.falcon.entity.FileSystemStorage.fileSystemEvictor(FileSystemStorage.java:331)
      	at org.apache.falcon.entity.FileSystemStorage.evict(FileSystemStorage.java:300)
      	... 23 more
      

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              me.venkatr Venkatesan Ramachandran
              bvellanki Balu Vellanki
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                Created:
                Updated:
                Resolved:

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