PrefectHQ/prefect

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Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

Stars: 23.9k
Forks: 2.5k
Open beginner issues: 2
Indexed issues: 784
Avg merge: 1d 23h
Merged PRs (30d): 113

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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784 open issues indexed

Completed subflow loses its retry budget when reexecuted on parent retry Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PrefectHQ/prefect#23152 · Opened Sep 18, 2026
DockerWorker: container.wait() bypasses the client timeout, leaving runs in Submitting indefinitely Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 70/100

PrefectHQ/prefect#23150 · Opened Sep 18, 2026
Mapped children not yet started leave no task run when PrefectFutureList.result() raises the first failure Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#23138 · 1 comment · Opened Sep 17, 2026
Flow ends COMPLETED when it returns a list of .map() results containing a FAILED task (states nested one level are ignored) Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

PrefectHQ/prefect#23137 · Opened Sep 17, 2026
mark_deployments_ready updates every deployment on a queue on every worker poll Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 74/100

PrefectHQ/prefect#23129 · Opened Sep 15, 2026
PostgreSQL /flow_runs/filter times out for state-filtered START_TIME_ASC queries on large flow_run tables Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefect#23127 · Opened Sep 15, 2026
Allow List vs Deny List for ACLs Open

cloud enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

PrefectHQ/prefect#23119 · Opened Sep 14, 2026
Add Quick Run and Custom Run to the flow's Deployments tab Open

enhancement ui-v2

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

PrefectHQ/prefect#23110 · 1 comment · Opened Sep 14, 2026
prefect deploy ignores explicit schedules: [], retaining an active schedule (3.8.5) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 76/100

PrefectHQ/prefect#23097 · 1 comment · Opened Sep 14, 2026
Support custom log storage implementations Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

PrefectHQ/prefect#23094 · Opened Sep 13, 2026
Add a Prefect worker for Nebius Serverless Jobs Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 48/100

PrefectHQ/prefect#23087 · 1 reaction · Opened Sep 11, 2026
[docs] Improve AutoEnum class documentation in API reference Open

docs

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefect#23075 · 1 comment · Opened Sep 9, 2026
TASK_SOURCE identifies a task by its source text alone, so two tasks with identical bodies and different closures share a cache entry Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#23062 · Opened Sep 8, 2026
Concurrency UI maxes out at 200 entries Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PrefectHQ/prefect#23002 · 1 comment · Opened Sep 1, 2026
`dbt source freshness` logs are not associated with the enclosing task Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 62/100

PrefectHQ/prefect#22990 · 3 comments · Opened Aug 31, 2026
Automatically clean up offline workers Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22987 · Opened Aug 31, 2026
revoke_expired_lease revokes a lease that was renewed after it was listed as expired Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

PrefectHQ/prefect#22983 · 2 comments · Opened Aug 30, 2026
{{ event.url }} renders empty in automation Jinja templates despite #19851 fix Open

bug cloud

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PrefectHQ/prefect#22957 · 1 comment · Opened Aug 27, 2026
prefect-redis: ephemeral consumer loops on `no such key` when trimming a missing Redis stream Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

PrefectHQ/prefect#22956 · 2 comments · Opened Aug 27, 2026
FileSystem lease storage: unsynchronised expiration-index update revokes live concurrency leases (410 Gone) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#22935 · Opened Aug 25, 2026
Tasks marked with allow_failure runs even though upstream tasks are pending Open

bug

PrefectHQ/prefect#22918 · 3 comments · 1 assignee · Opened Aug 24, 2026
`db_vacuum` Docket jobs run concurrently against a size-1 maintenance pool and time out hourly Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#22912 · 1 reaction · Opened Aug 23, 2026
Secret block save (`update_block_document`) returns 500 Internal Server Error once the encrypted value crosses ~65,536 JSON-escaped characters Open

bug cloud

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22873 · 1 comment · Opened Aug 18, 2026
Add an endpoint for resolving a flow run’s job specification Open

enhancement

PrefectHQ/prefect#22859 · 1 comment · 1 assignee · Opened Aug 17, 2026
Docker direct infrastructure submission drops include_files sidecar Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PrefectHQ/prefect#22856 · Opened Aug 17, 2026
SIGTERM race in `flow-run execute` reschedule mode can strand a run in AwaitingRetry forever (retry_type='in_process' with no live process) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PrefectHQ/prefect#22847 · 1 comment · Opened Aug 17, 2026
Consider supporting httpx2 alongside httpx Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22841 · 1 comment · 2 reactions · Opened Aug 16, 2026
`db_vacuum` on high-volume Postgres: events and flow_runs contend for one hardcoded connection, and row DELETE cannot promptly reduce disk usage Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

PrefectHQ/prefect#22839 · 1 comment · Opened Aug 15, 2026
[docs] Document when and how to independently scale Prefect background services Open

docs

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#22837 · 3 comments · Opened Aug 14, 2026
Renovate Dependency Dashboard Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

PrefectHQ/prefect#22799 · Opened Aug 10, 2026
on_crashed hooks silently skipped on process work pools: runner signals completion before running hooks, worker deletes the cwd Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PrefectHQ/prefect#22766 · Opened Aug 10, 2026
azure_container_instance do not Support GPUs Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

PrefectHQ/prefect#22674 · 1 comment · Opened Jul 30, 2026
Flow runs with custom flow state names do not show up anywhere in UI in prefect cloud Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PrefectHQ/prefect#22665 · 2 comments · Opened Jul 29, 2026
Add pending-claim self-healing for flow runs stuck in `PENDING` Open

enhancement

PrefectHQ/prefect#22664 · 1 assignee · Opened Jul 29, 2026
Flow-run state events can be delivered before their states are committed Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#22654 · 1 comment · Opened Jul 28, 2026
Default "Cancel all sub flow runs" to checked when cancelling a flow run (or cascade server-side on Cancelling) Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22594 · 1 comment · Opened Jul 22, 2026
the priority assigned to the `flowRun` itself can be changed Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

PrefectHQ/prefect#22563 · 1 comment · Opened Jul 21, 2026
Updated UI feedback: Navigation or usability Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PrefectHQ/prefect#22539 · Opened Jul 20, 2026
ProcessWorker should drain active local flow runs on SIGTERM Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22528 · Opened Jul 16, 2026
Improving Prefect's Deployment Page Performance with +100 deployments on a Self Hosted environment. Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PrefectHQ/prefect#22505 · Opened Jul 14, 2026
prefect-redis: connection pool never recovers after Redis outage — dead in-use connections are not reaped (permanent MaxConnectionsError) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22478 · 1 comment · Opened Jul 11, 2026
keeping hide subflow On as default Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 52/100

PrefectHQ/prefect#22454 · 2 comments · Opened Jul 8, 2026
prefect-redis: cached async Redis clients are never closed when their event loop ends → connection/FD leak in long-running services Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PrefectHQ/prefect#22442 · 1 comment · Opened Jul 6, 2026
Add support for a geospatial BBOX parameter widget in the flow run form Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

PrefectHQ/prefect#22439 · 2 comments · Opened Jul 4, 2026
prefect flow_engine failed to set status on handle_success should not call handle_exception to overwrite the state Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 48/100

PrefectHQ/prefect#22426 · 5 comments · Opened Jul 2, 2026
Backport FastAPI 0.137 compatibility fix (#22277) to the 3.6.x line Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

PrefectHQ/prefect#22398 · 2 comments · 1 reaction · Opened Jun 29, 2026
AwaitingConcurrencySlot runs slow to submit on modal push work pools (~12–15 min) even when the slot is free Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PrefectHQ/prefect#22386 · 1 comment · Opened Jun 25, 2026
Default parameter overrules, when custom running a flow in UI Open

bug cloud ui

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PrefectHQ/prefect#22334 · 6 comments · Opened Jun 19, 2026
Prefect Server got a lot of Timeouts Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PrefectHQ/prefect#22314 · 1 comment · Opened Jun 17, 2026
Publish prefect-aws image to AWS ECR Gallery Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PrefectHQ/prefect#22251 · Opened Jun 10, 2026

PrefectHQ/prefect

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