hussein-awala commented on code in PR #32847:
URL: https://github.com/apache/airflow/pull/32847#discussion_r1284716038


##########
airflow/providers/google/cloud/hooks/dataflow.py:
##########
@@ -1014,8 +1014,9 @@ def start_sql_job(
         self.log.info("Output: %s", proc.stdout.decode())
         self.log.warning("Stderr: %s", proc.stderr.decode())
         self.log.info("Exit code %d", proc.returncode)
+        stderr_last_20_lines = 
"\n".join(proc.stderr.decode().strip().splitlines()[-20:])
         if proc.returncode != 0:
-            raise AirflowException(f"Process exit with non-zero exit code. 
Exit code: {proc.returncode}")
+            raise AirflowException(f"Process exit with non-zero exit code. 
Exit code: \ {proc.returncode} \n Error Details : {stderr_last_20_lines}")

Review Comment:
   I see that we already log the stderr lines in warning level, so maybe we 
could move this part to the condition and log it in error level if the return 
code is not equal to 0, and if it is 0 we log it in warning level.
   WDYT?
   something like:
   ```python
           if proc.returncode != 0:
               self.log.error("Stderr: %s", proc.stderr.decode())
               self.log.info("Exit code %d", proc.returncode)
               raise AirflowException(f"Process exit with non-zero exit code. 
Exit code: {proc.returncode}")
          else:
              self.log.warning("Stderr: %s", proc.stderr.decode())
              self.log.info("Exit code %d", proc.returncode)
   ```



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