dtaniwaki commented on code in PR #56497:
URL: https://github.com/apache/spark/pull/56497#discussion_r3450038714
##########
python/pyspark/sql/connect/client/reattach.py:
##########
@@ -310,6 +339,19 @@ def _call_iter(self, iter_fun: Callable) -> Any:
)
self._iterator = None
raise RetryException() from e
+ elif (
+ e.code() == grpc.StatusCode.PERMISSION_DENIED
+ and not self._permission_denied_retried
+ ):
+ # Treat the first mid-stream PERMISSION_DENIED as a
token-expiry signal; reattach
+ # once so the metadata provider can produce a fresh credential.
+ logger.debug(
+ f"PERMISSION_DENIED on stream for operation
{self._operation_id}; "
+ f"allowing one reattach with refreshed metadata."
+ )
+ self._permission_denied_retried = True
+ self._iterator = None
+ raise RetryException() from e
Review Comment:
Maybe, I should revert the commit first to make it at least safer?
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