{"id":"sstable-block-size-is-index-interval","text":"`SSTableWriter`'s `block_size` parameter controls the sparse index frequency (one index entry per N records), not a physical byte-aligned block size; records are written contiguously with no padding or alignment to fixed byte boundaries.","truth_value":"IN","source":"entries/2026/05/29/topic-block-based-wal-format.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"sstable-block-size-is-index-interval","truth_value":"IN","reason":"premise"}]}}