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feat: CometNativeScan per-partition plan data, add DPP [iceberg]#3446

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mbutrovich wants to merge 17 commits intoapache:mainfrom
mbutrovich:cometnativescan-dpp
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feat: CometNativeScan per-partition plan data, add DPP [iceberg]#3446
mbutrovich wants to merge 17 commits intoapache:mainfrom
mbutrovich:cometnativescan-dpp

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@mbutrovich mbutrovich commented Feb 8, 2026

Which issue does this PR close?

Closes #3442.

Rationale for this change

What changes are included in this PR?

Scan Mode COMET_DPP_ENABLED Result
native_datafusion true (default) CometNativeScanExec with DPP (this PR)
native_datafusion false Fall back to Spark (existing behavior)
Iceberg native true (default) CometIcebergNativeScanExec with DPP (#3349)
Iceberg native false Fall back to Spark (this PR)
auto N/A Fall back to Spark (existing behavior)
native_iceberg_compat N/A Fall back to Spark (existing behavior)

How are these changes tested?

@mbutrovich mbutrovich added this to the 0.14.0 milestone Feb 8, 2026
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Add DPP support to native_datafusion/CometNativeScan

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