feat(datafusion): add try_new_with_runtime to route catalog IO off the caller's runtime#20
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…gTableProvider Adds `try_new_with_runtime` to `IcebergTableProvider`, `IcebergSchemaProvider`, and `IcebergCatalogProvider`. When a `Runtime` is supplied, the IO-bound work in `scan` (catalog reload, `plan_files`, manifest fetches) and `insert_into` (catalog reload) is spawned on `runtime.io()` via a new `run_on_io` helper, so the calling runtime — typically DataFusion's CPU runtime in a split setup — only awaits a join handle. The existing `try_new` signatures are unchanged.
toutane
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notfilippo
approved these changes
May 12, 2026
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When DataFusion runs with a CPU/IO split runtime, catalog IO (
load_table,plan_files, manifest fetches) runs on the CPU runtime by default, which can cause blocking or starvation.Changes
Adds
try_new_with_runtime(…, runtime: Option<Runtime>)toIcebergTableProvider,IcebergSchemaProvider, andIcebergCatalogProvider.When a
Runtimeis provided, all IO-bound work is dispatched toruntime.io()via a newrun_on_iohelper:scan:load_table+plan_files+ manifest fetchesinsert_into:load_tableThe existing
try_newsignatures are unchanged (they delegate totry_new_with_runtime(…, None)), so this is fully backward-compatible.