DoltLite 0.50.13

Improved scan and bulk-write performance, reduced checkpoint overhead, and strengthened version-control and SQL correctness.

Reliability and correctness

• Fixed concurrent commits overwriting successful peer writes, stale branch references after lock waits, and recovery after a failed commit race.
• Corrected merges involving column renames and drops, generated columns, expression and unique indexes, and full-text indexes.
• Improved interactive rebase ordering, conflict pauses, rollback recovery, and retries; added support for edit steps and keeping or dropping empty commits.
• Fixed historical-query schemas and branch-tip resolution, staging after soft reset, and workspace and constraint-violation reporting.
• Corrected embedded-NUL handling in NOCASE keys, foreign-key collation checks, row-ID allocation, and transaction rollback after pending data spills.

Performance and testing

• Accelerated large-table and wide-row reads, scans after pending edits, and repeated queries with small caches; reduced cache disruption from large scans.
• Improved bulk updates and deletes, range joins, grouped queries, and default-column backfills.
• Made chunk-index checkpoints incremental, reducing file growth and write overhead for streams of small commits.
• Added nightly SQL hotspot discovery and expanded performance regression, version-control fuzzing, and Dolt oracle coverage.

Benchmark / SQL workload summary

In-memory

Operation	SQLite median total	DoltLite median total	Ratio
Reads	10.17s	11.66s	1.1×
Writes	1.97s	3.18s	1.6×

File-backed

Operation	SQLite median total	DoltLite median total	Ratio
Reads	10.73s	11.80s	1.1×
Writes	3.76s	4.31s	1.1×
Autocommit writes	901.73ms	2.65s	2.9×

Full nightly results: performance-report.md.