#3412 Add file_extension, enable_legacy_filename fields to BlobType Pull request opened by ddl-rliu Upstream #3406 Tracking issue Closes flyteorg/flyte#7024 Why are the changes needed? What changes were proposed in this pull request? Add file_extension, enable_legacy_filename fields to BlobType. Add annotation "FileDownloadConfig". The annotation "FileDownloadConfig" is used to annotate a FlyteFile when we want to download the file with a specific extension. For example, # ContainerTask def t1(file: Annotated[FlyteFile, FileDownloadConfig(file_extension="csv")]): ... # copilot downloads the file to e.g. /inputs/file.csv versus... def t1(file: FlyteFile["csv"]): ... # copilot downloads the file to e.g. /inputs/file Under the hood, this sets

file_extension, enable_legacy_filename

in BlobType, and depends on flyteorg/flyte#7009 How was this patch tested? Setup process Screenshots Check all the applicable boxes • I updated the documentation accordingly. • All new and existing tests passed. • All commits are signed-off. Related PRs Docs link flyteorg/flytekit