fix: log exceptions instead of silently swallowing them in Job/JobGroup.status (#569)

Job.status and JobGroup.status used  with a

, which swallowed status-check failures silently and made

debugging hard. Preserve the existing fallback behavior (return last known

state / UNKNOWN) but log the exception at ERROR level so operators can see

when the runner is failing.

Updates existing exception tests to assert the error is logged.

Signed-off-by: Andrew White <andrewh@cdw.com>

Author: andrewwhitecdw

nemo_run/run/job.py

@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
 import sys
 import traceback
 from dataclasses import dataclass, field
@@ -28,6 +29,7 @@
 from nemo_run.core.execution.slurm import SlurmExecutor
 from nemo_run.core.frontend.console.api import CONSOLE
 from nemo_run.core.serialization.zlib_json import ZlibJSONSerializer
+
 from nemo_run.run.logs import get_logs
 from nemo_run.run.plugin import ExperimentPlugin
 from nemo_run.run.task import direct_run_fn
@@ -36,6 +38,8 @@
 from nemo_run.run.torchx_backend.runner import Runner
 from nemo_run.run.torchx_backend.schedulers.api import get_executor_str
 
+logger = logging.getLogger(__name__)
+
 
 @dataclass
 class Job(ConfigurableMixin):
@@ -98,9 +102,9 @@ def status(self, runner: Runner) -> AppState:
             status = runner.status(self.handle)
             state = status.state if status else None
         except Exception:
-            ...
-        finally:
-            return state or self.state
+            logger.exception("Failed to get status for job %s", self.handle)
+            state = None
+        return state or self.state
 
     def logs(self, runner: Runner, regex: str | None = None):
         get_logs(
@@ -316,11 +320,11 @@ def status(self, runner: Runner) -> AppState:
                 status = runner.status(handle)
                 state = status.state if status else None
             except Exception:
-                ...
-            finally:
-                if not state:
-                    state = AppState.UNKNOWN
-                new_states.append(state)
+                logger.exception("Failed to get status for job handle %s", handle)
+                state = None
+            if not state:
+                state = AppState.UNKNOWN
+            new_states.append(state)
 
         self.states = new_states
         return self.state

test/run/test_job.py

@@ -102,7 +102,7 @@ def test_job_status_launched(simple_task, docker_executor, mock_runner):
     mock_runner.status.assert_called_once_with("test-handle")
 
 
-def test_job_status_exception(simple_task, docker_executor, mock_runner):
+def test_job_status_exception(simple_task, docker_executor, mock_runner, caplog):
     job = Job(
         id="test-job",
         task=simple_task,
@@ -113,7 +113,10 @@ def test_job_status_exception(simple_task, docker_executor, mock_runner):
     )
 
     mock_runner.status.side_effect = Exception("Test exception")
-    assert job.status(mock_runner) == AppState.RUNNING
+    with caplog.at_level("ERROR", logger="nemo_run.run.job"):
+        assert job.status(mock_runner) == AppState.RUNNING
+    assert "Failed to get status for job test-handle" in caplog.text
+    assert "Test exception" in caplog.text
 
 
 def test_job_logs(simple_task, docker_executor, mock_runner):
@@ -437,7 +440,7 @@ def test_job_group_status_launched(simple_task, docker_executor, mock_runner):
     mock_runner.status.assert_called_once_with("handle1")
 
 
-def test_job_group_status_exception(simple_task, docker_executor, mock_runner):
+def test_job_group_status_exception(simple_task, docker_executor, mock_runner, caplog):
     job_group = JobGroup(
         id="test-group",
         tasks=[simple_task, simple_task],
@@ -448,9 +451,12 @@ def test_job_group_status_exception(simple_task, docker_executor, mock_runner):
     )
 
     mock_runner.status.side_effect = Exception("Test exception")
-    status = job_group.status(mock_runner)
+    with caplog.at_level("ERROR", logger="nemo_run.run.job"):
+        status = job_group.status(mock_runner)
     assert status == AppState.UNKNOWN
     assert job_group.states == [AppState.UNKNOWN]
+    assert "Failed to get status for job handle handle1" in caplog.text
+    assert "Test exception" in caplog.text
 
 
 def test_job_group_logs(simple_task, docker_executor, mock_runner):