Craig Patrick created NIFI-15683:
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Summary: "Moving" SFTP files via rename command fails on some
servers
Key: NIFI-15683
URL: https://issues.apache.org/jira/browse/NIFI-15683
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 2.7.0
Environment: All
Reporter: Craig Patrick
When running a FetchSFTP processor with the completion strategy set to "Move",
in certain servers an error is thrown:
{code:java}
FetchSFTP[id=8561c4bf-d472-3c0e-3eb5-25b311c85b79] Successfully fetched the
content for FlowFile[REDACTED] from [REDACTED] but failed to rename the remote
file due to Failed to rename [REDACTED] to [REDACTED]: java.io.IOException:
Failed to rename [REDACTED] to [REDACTED] - Caused by: SFTP error
(SSH_FX_FAILURE): Failure {code}
Looking into it, this can be an issue when running in the standard OpenSSH
client and server as it throws it as a specific error. The only way around this
is to perform a 2 step strategy of remove and rename. The processor should be
updated for the "Move" completion strategy to take this into account and
instead of performing a rename command, should delete the original and rename
the current file, or should have options for replacement strategy similar to
other processors where the file can be renamed if exists or ignored if exists -
this would remove the errors and allow more flexibility.
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