Marco Gaido created NIFI-5043:
---------------------------------

             Summary: TailFile opens and never closes readers in Multiple Files 
mode
                 Key: NIFI-5043
                 URL: https://issues.apache.org/jira/browse/NIFI-5043
             Project: Apache NiFi
          Issue Type: Bug
            Reporter: Marco Gaido
            Assignee: Marco Gaido


When Multiple File is set as Tailing Mode, TailFile tries to recover the state 
every time it is triggered, as if it were recovering from a restart. In this 
way, it opens a new reader every time for every file and it never closes them.

This situation can easily be diagnosticated running {{lsof}}: the number of 
open handles keep increasing for every TailFile trigger. 



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