[CORE] Use ArrayList instead of LinkedList in Spillers#11619
Merged
yaooqinn merged 1 commit intoapache:mainfrom Feb 24, 2026
Merged
[CORE] Use ArrayList instead of LinkedList in Spillers#11619yaooqinn merged 1 commit intoapache:mainfrom
yaooqinn merged 1 commit intoapache:mainfrom
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@zhztheplayer can you please review this PR? Thanks! |
zhztheplayer
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Feb 18, 2026
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What changes are proposed in this pull request?
This PR replaces LinkedList with ArrayList in Spillers.AppendableSpillerList. The list is only used for two operations: add() (append) and sequential for-each iteration in
spill(). ArrayList is more efficient for both: append is amortized O(1) without allocating a Node object per element, and iteration benefits from sequential memory layout (CPU cache locality). LinkedList is faster for frequent mid-list insertions/removals, which this class never does.How was this patch tested?
Existing unit tests.
Was this patch authored or co-authored using generative AI tooling?
No