lazy evaluation for explode generator #52528
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…ues. Use map iterator" This reverts commit 2f3ec5f.
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What changes were proposed in this pull request?
Change
ExplodeBase.evalto return anIteratorinstead ofArray.Why are the changes needed?
Returning an
Arrayis requires that allInternalRowobjects be created in the call toExplodeBase.eval. Using iteratorsMapExplodeIteratorandArrayExplodeIteratorthe memory required for the explode operator is reduced.Does this PR introduce any user-facing change?
This PR has no user facing changes.
How was this patch tested?
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Was this patch authored or co-authored using generative AI tooling?
The creation of this patch was assisted by Microsoft Copilot. The initial change was made using Agent mode.