Distinguishing bigquery logging failures severities (#35373)

Author: TanuSharma2511

sdks/python/apache_beam/io/gcp/bigquery.py

@@ -1768,11 +1768,14 @@ def _flush_batch(self, destination):
             'Errors were {}'.format(("" if should_retry else " not"), errors))
 
         # The log level is:
-        # - WARNING when we are continuing to retry, and have a deadline.
-        # - ERROR when we will no longer retry, or MAY retry forever.
-        log_level = (
-            logging.WARN if should_retry or self._retry_strategy
-            != RetryStrategy.RETRY_ALWAYS else logging.ERROR)
+        # - WARNING when should_retry is true, else ERROR.
+
+        if (should_retry and
+            self._retry_strategy in [RetryStrategy.RETRY_ON_TRANSIENT_ERROR,
+                                     RetryStrategy.RETRY_ALWAYS]):
+          log_level = logging.WARN
+        else:
+          log_level = logging.ERROR
 
         _LOGGER.log(log_level, message)