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# ask-community
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Lindsay S
12/19/2022, 5:13 PMHI all, I am new to dagster, so this is probably a fairly elementary question, but I am trying to store 2 assets in s3 in different prefixes. So upstream_asset should go in s3://my-bucket/prefix1 and downstream_asset should go in s3://my-bucket/prefix2. I cannot figure out how to do this, though:
🤖 1
Copy code
@asset
def upstream_asset():
return [1, 2, 3]
@asset
def downstream_asset(upstream_asset):
return upstream_asset + [4]
resources_by_env = {
"prod": {
"io_manager": s3_pickle_io_manager.configured({
"s3_bucket": "my-bucket",
"s3_prefix": "prefix1"}),
"s3": s3_resource
},
"local": {"io_manager": fs_io_manager},
}
defs = Definitions(
assets=[upstream_asset, downstream_asset],
resources=resources_by_env[os.getenv("DAGSTER_DEPLOYMENT", "prod")],
)s
sean
12/19/2022, 5:45 PMhi Lindsay,
io_managerio_manager Copy code
@asset(io_manager_key='some_resource_key')
def downstream_asset(upstream_asset):
....🤦 1
l
Lindsay S
12/19/2022, 5:49 PMthanks!