Changelog

For a high-level description of the new features, please check out our blog post on this release

0.9.0

Released on Jan 15, 2020.

Added the ability to leverage native ECS task definition revisions for flow versions in Fargate agent - #1870
Added the ability to pull in kwargs per flow version from S3 on flow submission in Fargate agent - #1870
Add sensible default result handlers to non-Docker storage options - #1888

Allow for task looping to beyond Python's maximum recursion depth - #1862
Prevent duplication of stdout logs from multiple instantiated agents - #1866
Allow intervals less than 60 seconds in IntervalClocks - #1880
Introduce new Secret.exists method for checking whether a Secret is available - #1882
Introduce new -e CLI options on agent start commands to allow passing environment variables to flow runs - #1878
Stop persisting None when calling result handlers - #1894
Change Cancelled state to indicate Finished instead of Failed - #1903
All States now store cached_inputs for easier recovery from failure - #1898
Always checkpoint tasks which have result handlers - #1898

Enforce provision of max_retries if specifying retry_delay for a Task - #1875
Fix issue with reduce tasks in flow.visualize() - #1793

The checkpointing kwarg will be removed from Tasks as it is now a default behavior - #1898

Remove default value for aws_credentials_secret on all S3 hooks - #1886
Remove config.engine.result_handler section of Prefect config - #1888
Remove default value for credentials_secret on GCSResultHandler - #1888
Remove default value for azure_credentials_secret on AzureResultHandler - #1888