lance-format / lance-format/lance
Ensure Datafusion queries are constrained to Datafusion target partitions
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@wjones127 is already working on this.
Since Jun 1, 2026.
enhancement
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- Rust
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Description
We should make sure that the maximum number of CPUs used by a query is dictated by the target number of partitions in DataFusion. This lets a system that wants to use fewer than the number of available CPUs for a query. For example, in a multi-tenant system restricting each query to use 8 vCPUs even if 128 are available.
Some nodes don't use partitions yet; even if they use separate thread pools we should make sure they respect this setting in their max concurrent tasks. Moving those nodes to use partitioning is out-of-scope for this issue.
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