Technologies/Prefect/prefect.task_run.count
PrefectPrefectMetric

prefect.task_run.count

Total task runs by state
Dimensions:None
Available on:PrometheusPrometheus (1)DatadogDatadog (1)Native (1)
Interface Metrics (3)
PrometheusPrometheus
Total number of task runs by state
Dimensions:None
DatadogDatadog
Total number of task runs
Dimensions:None
Native
Total number of task runs by state
Dimensions:None
Sources
prefect_task_runs_totaldocs.prefect.io
prefect.task_run.countdocs.prefect.io
task_run_totaldocs.prefect.io

Technical Annotations (47)

Configuration Parameters (5)
persist_resultrecommended: True
Enables result data persistence to prevent task re-execution on retry
remote_storagerecommended: configured
Required for result persistence across flow retries
PREFECT_SERVER_DATABASE_TIMEOUTrecommended: 60
Database operation timeout in seconds
PREFECT_SERVER_DATABASE_CONNECTION_TIMEOUTrecommended: 30
Connection establishment timeout in seconds
max_workers
Task runner concurrency limit; lowering it did not resolve hanging issue
Error Signatures (6)
asyncpg.exceptions.DeadlockDetectedErrorexception
sqlalchemy.exc.DBAPIErrorexception
deadlock detectedlog pattern
waits for ShareLock on transactionlog pattern
401http status
FileNotFoundError: [Errno 2] No such file or directory: 'prefect'exception
CLI Commands (2)
python -m sitediagnostic
. /path/to/.venv/bin/activate && /path/to/.venv/bin/dask-workerremediation
Technical References (34)
ETL Task3componentlakefs_test_latest_file.csvfile pathFlowRunnercomponentstate.resultcomponentflow.get_tasks()componenttask stateconceptresult data payloadconceptSequentialTaskRunnercomponentresult payloadconceptengine/client codecomponenttask_runcomponenttask_run_statecomponent/runscomponentapi/task_runs/countcomponentissue #16299conceptissue #19347conceptConcurrentTaskRunnercomponentwait_forcomponentDaskTaskRunnercomponentasyncpgcomponentON CONFLICTconcept/usr/local/lib/python3.12/site-packages/prefect/server/services/task_run_recorder.pyfile pathShareLockconceptsubprocess.PopencomponentDaskExecutorcomponentsystemdcomponent/prefect/utilities/executors.pyfile pathtask.submit()componentfuture.result()componentThreadPoolTaskRunnercomponentRayTaskRunnercomponentprefect_test_harnesscomponentZombie Killer Servicecomponentwork queuecomponent
Related Insights (13)
Pipeline task fails when required data column is missing from input filecritical
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Flow rebuilding prevents task state resumption in FlowRunnerwarning
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Manual task state completion ignored on flow retrywarning
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Empty result payload triggers automatic task re-executionwarning
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Task run count API endpoint blocks UI with millions of task runscritical
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task_runs/count API endpoint timeout prevents UI renderingwarning
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API server overload at high scale causes HTTP 500 errorswarning
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Tag concurrency limit deadlock with dependent tasks in Prefect 3.2.15+critical
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Database deadlock on concurrent task_run insertscritical
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Prefect Cloud free tier rate limits cause request failureswarning
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Heartbeat fails when Dask worker systemd service lacks virtual environment PATHcritical
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Tasks stuck in Running state with task.submit() pattern cause flow hangscritical
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Task heartbeat timeout creates zombie tasks during API outagewarning
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