feat(capture): flatten labels to top-level l_* columns #1708
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This was referenced Jan 14, 2026
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Replace MapArray-based label storage with flat l_<key> columns in Parquet output. This enables predicate pushdown for filtering by container_id and other labels, avoiding full file scans. Key changes: - Dynamic schema generation based on discovered label keys - Dictionary encoding for low-cardinality label columns - Lazy ArrowWriter initialization (schema determined at first flush) - Updated validation and round-trip tests for new schema 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add BloomFilterConfig and BloomFilterColumn types to configure bloom filters on label columns. Bloom filters enable efficient query-time filtering by allowing readers to skip row groups that definitely don't contain a target value. New APIs: - Format::with_bloom_filter() - create writer with bloom filter config - format.bloom_filter_config() - getter for rotation - CaptureManager::new_parquet_with_bloom_filter() - CaptureManager::new_multi_with_bloom_filter() Backwards compatible - existing Format::new() and new_parquet() still work unchanged using BloomFilterConfig::default(). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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