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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