[SPARK-56647][SQL] Optimize storage of SparkSQL Last Attempt Metrics#55585

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Commits on Apr 28, 2026

[SPARK-56647][SQL][FOLLOW-UP] Optimize storage of SparkSQL Last Attempt Metrics

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[SPARK-56647][SQL][FOLLOW-UP] Add a threshold-based HashMap for fast override lookups

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[SPARK-56647][SQL][FOLLOW-UP] Simplify LastAttemptRDDVals overrides to use a HashMap from the first override

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[SPARK-56647][SQL][FOLLOW-UP] Replace LastAttemptRDDVals overrides with three lazy-allocated per-component arrays

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Commits on Apr 29, 2026

[SPARK-56647][SQL][FOLLOW-UP] Simplify setOverrideComponent: don't clear back to EMPTY_ID

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[SPARK-56647][SQL][FOLLOW-UP] Apply review scaladoc clarifications

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[SPARK-56647][SQL][FOLLOW-UP] toString: build per-partition lines via StringBuilder in a single pass

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Commits on Apr 30, 2026

retrigger CI

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