lance-format / lance-format/lance

Remove duplicate datafusion code

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#5,671 2 comments 0 reactions 1 assignee View on GitHub

@Xuanwo is already working on this.

Since Jan 13, 2026.

good first issue
Dominant language
Rust
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Description

OneShotPartitionStream is defined in two places

  • rust/lance-datafusion/src/exec.rs
  • rust/lance/src/datafusion/dataframe.rs

In addition to this struct, there is a SessionContextExt defined in each of these. From a dependency graph it looks like lance-datafusion is the place we should have a single definition of these and then remove references to the other. The one issue I see is that the SessionContextExt in lance is more complete than the one in lance-datafusion.

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