[core] Support partition predicate pushdown for PartitionsTable#7628
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sundapeng wants to merge 1 commit intoapache:masterfrom
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[core] Support partition predicate pushdown for PartitionsTable#7628sundapeng wants to merge 1 commit intoapache:masterfrom
sundapeng wants to merge 1 commit intoapache:masterfrom
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PartitionsTable.withFilter() was a no-op (TODO), causing full manifest scans when querying with partition filters. This adds predicate pushdown following the same pattern as BucketsTable (apache#7592) and FilesTable (apache#7376). Key changes: - PartitionsScan extracts partition predicate via LeafPredicateExtractor - PartitionsSplit carries the predicate to PartitionsRead - Catalog path: in-memory filter preserving metadata columns - TableScan path: manifest-level pushdown via withPartitionFilter - PartitionPredicateHelper refactored to build+apply two-step pattern - parsePartitionSpec extended for key=value/key=value format Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Purpose
PartitionsTable.withFilter()was a no-op (// TODOat line 189), causing full manifest scans when querying with partition filters likeSELECT * FROM t$partitions WHERE partition = 'dt=20260410'. This adds partition predicate pushdown following the same pattern established by BucketsTable (#7592), FilesTable (#7376), ManifestsTable (#7310), and ConsumersTable (#7329).The implementation uses a dual-path filtering strategy:
catalog.listPartitions()call and filters results in memory, keeping metadata columns (created_at,created_by,updated_by,options) intactInnerTableScan.withPartitionFilter()for manifest-level pruningAlso refactors
PartitionPredicateHelper.applyPartitionFilter()into a two-step build+apply pattern (buildPartitionPredicate()+ apply), and extendsparsePartitionSpec()to support PartitionsTable'skey=value/key=valueformat in addition to the existing{value1, value2}format.Tests
BucketsTableTestpasses (verifies refactored helper is backward-compatible)API and Format
No API or storage format changes.
Documentation
No documentation changes needed.