Technologies/Grafana/celery.task.failed
GrafanaGrafanaMetric

celery.task.failed

Tasks failed with exception
Dimensions:None

Technical Annotations (34)

Configuration Parameters (9)
max_retriesrecommended: 5
Reasonable retry limit to avoid endless loops
acks_laterecommended: True
ensures failed tasks remain in queue for retry
retry_backoffrecommended: exponential with base ~10 seconds
prevents overwhelming resources during retries
retry_jitterrecommended: enabled
prevents synchronized retry bursts
countdownrecommended: dynamic based on retry count
sets initial retry delay
task_acks_laterecommended: True
Acknowledges tasks only after completion to prevent data loss
task_reject_on_worker_lossrecommended: True
Ensures task rejection on worker failure
task_acks_on_failure_or_timeoutrecommended: False
Default True causes silent task loss on failures
task_reject_on_worker_lostrecommended: True
Requeues tasks when worker dies unexpectedly
Error Signatures (1)
Task requeue attempts exceeded max; marking failedlog pattern
CLI Commands (3)
celery -A proj inspect activemonitoring
start_http_server(8000)monitoring
celery inspect active_queuesdiagnostic
Technical References (21)
exponential backoffconceptPrometheuscomponentGrafanacomponentFlowercomponentSentrycomponentautoretry_forparameterretry_kwargsparametertask timeoutconceptexecution timeconceptdead-letter queueconceptDataDogcomponentprometheus-clientcomponenttask_preruncomponenttask_postruncomponentorphaned tasksconceptWebSocketprotocolCeleryTaskHighFailRateconcepttask exceptions tablecomponentairflow-providers-celerycomponentCeleryExecutorcomponentrequeue limitconcept
Related Insights (20)
Transient errors resolved through automatic retries with exponential backoffinfo
▸
Unhandled exceptions cause task disruptionscritical
▸
Network latency increases task execution time by 25%warning
▸
Aggressive periodic task scheduling causes 25% failure increasewarning
▸
Inadequate monitoring leads to 65% delayed problem resolutionwarning
▸
Misconfigured retry settings cause 40% of unexpected task failurescritical
▸
Exponential backoff reduces failure rates by 30% under high loadwarning
▸
Tasks exceeding average execution time by 30% are 65% more prone to failureswarning
▸
Dead-letter queues prevent data loss during task failuresinfo
▸
Monitoring tools reduce downtime by 30% through proactive issue detectioninfo
▸
Retry rate exceeding 0.5% indicates broker or task bottleneckswarning
▸
Task failure rate above 2% signals critical stability issuescritical
▸
Prometheus metrics integration reduces MTTD by 40%info
▸
Silent task failures cause delayed detection and revenue losscritical
▸
Task success rate below 99.95% indicates systemic issueswarning
▸
Celery tasks acknowledge failures by default causing silent data losscritical
▸
Task success rate below 95% indicates systemic execution problemswarning
▸
Reduced downtime through continuous monitoring implementationinfo
▸
High Celery task failure rate indicates systematic processing issuescritical
▸
Airflow health check fails to detect Celery worker queue consumer losscritical
▸