fix(core): add dedicated batch size config for parquet export#6747
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bluestreak01 merged 7 commits intomasterfrom Feb 11, 2026
Merged
fix(core): add dedicated batch size config for parquet export#6747bluestreak01 merged 7 commits intomasterfrom
bluestreak01 merged 7 commits intomasterfrom
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…bol tables Reduce default batch size from 1M to 100K rows and ensure parquet exports use the configured batch size. This allows symbol index re-scaling to occur more frequently during batch commits, preventing performance degradation when exporting tables with 1M+ distinct symbols. Co-Authored-By: Claude Opus 4.5 <[email protected]>
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bluestreak01
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Feb 11, 2026
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[PR Coverage check]😍 pass : 10 / 11 (90.91%) file detail
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Problem
When exporting tables with 1M+ distinct symbols to parquet, the large default batch size of 1M rows (from the general CREATE TABLE AS SELECT setting) prevented frequent batch commits. This caused symbol index re-scaling to be deferred, leading to performance degradation as the symbol table grew without capacity adjustments.
Summary
cairo.parquet.export.batch.size(default: 100K rows)