yjshen opened a new pull request #1849:
URL: https://github.com/apache/arrow-datafusion/pull/1849
# Which issue does this PR close?
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Closes #.
# Rationale for this change
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With JIT codegen, we could generate specific code for each query to reduce
branching overhead from the generalized interpret mode execution. Furthermore,
we could reduce the memory footprint during the execution by chaining multiple
Arrow compute kernels together and reusing the intermediate vectors.
For the lately introduced #1782 , much of the branching could be reduced
once we have JIT codegen based on schema information.
# What changes are included in this PR?
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- A new `datafusion-jit` module and its feature gate: `jit` (off-by-default)
- Codegen version of row -> record batch conversion as an example.
# Are there any user-facing changes?
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No.
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