I would like to propose the following enhancement to retry the failed Flight API call and refresh the access token on encountering FlightStatusCode.TOKEN_EXPIRED. For example when using an implementation of CallHeaderAuthenticator <https://github.com/apache/arrow/blob/master/java/flight/flight-core/src/main/java/org/apache/arrow/flight/auth2/CallHeaderAuthenticator.java> such as BearerTokenAuthenticator <https://github.com/apache/arrow/blob/master/java/flight/flight-core/src/main/java/org/apache/arrow/flight/auth2/BearerTokenAuthenticator.java> and the generated access token expires and FlightClient needs to detect that and retry the failed API call, along with the retry it needs to refresh the expired access token rather than having each client application write their own custom code with retry logic around this token expired workflow.
More Details: - Arrow JIRA: https://issues.apache.org/jira/browse/ARROW-10671 - Design Proposal: https://docs.google.com/document/d/187DlGpIpOUPGhWvXVQEq0mXw_hdWjzzOuZp0p5qzBp0/edit?usp=sharing Regards, Keerat
