Denes Arvay created NIFI-8102: --------------------------------- Summary: TailFile can skip characters if tailing a file on NFS mount Key: NIFI-8102 URL: https://issues.apache.org/jira/browse/NIFI-8102 Project: Apache NiFi Issue Type: Bug Reporter: Denes Arvay Assignee: Denes Arvay
As explained in NIFI-7972 on an NFS mount files can have temporary dummy data of {{NUL}} bytes. This was addressed at that Jira but the implementation contains a bug that can lead to characters skipped when encountering NUL bytes. The root cause is that the reader ({{FileChannel}}) is not repositioned properly. This wasn't discovered by the newly added unit tests because the second {{run}} call (after the simulated {{NUL}} byte replacement) was also called with {{initialize = true}} parameter, so the respective {{reader}} was reinitalized and repositioned. See [1] [1] https://github.com/apache/nifi/blob/main/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestTailFile.java#L198 -- This message was sent by Atlassian Jira (v8.3.4#803005)