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Posted to issues@nifi.apache.org by "Tamas Palfy (Jira)" <ji...@apache.org> on 2020/11/17 19:06:00 UTC

[jira] [Created] (NIFI-8020) TailFile can leave FileChannel open when handling NUL characters

Tamas Palfy created NIFI-8020:
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             Summary: TailFile can leave FileChannel open when handling NUL characters
                 Key: NIFI-8020
                 URL: https://issues.apache.org/jira/browse/NIFI-8020
             Project: Apache NiFi
          Issue Type: Bug
            Reporter: Tamas Palfy


In TailFile when REREAD_ON_NUL is set to 'true' and a NUL character is encountered, the processor aborts all processing and yields to try again later.
However the opened FileChannel is not stored in the states. Because of this the reader is not cleaned up later.
On Windows this prevents from deleting the tailed file. (On linux it seems the file still can be deleted. Leaving open the FileChannel is not good nonetheless.)

Fix: Store the reader in the states.



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