poll job status while waiting for single-user server to be reachable

jupyterhub · Dec 14, 2022 · ff04de4 · ff04de4
1 parent 0b15e4f
commit ff04de4
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/batchspawner/batchspawner.py b/batchspawner/batchspawner.py
@@ -458,6 +458,13 @@ async def start(self):
             # don't actually run the single-user server yet.
             if hasattr(self, "mock_port"):
                 self.port = self.mock_port
+            # Check if job is still running
+            status = await self.poll()
+            if status:
+                raise RuntimeError(
+                    "The Jupyter batch job started"
+                    " but died before launching the single-user server."
+                )
 
         self.db.commit()
         self.log.info(