## What's Changed * Fix TiFlash overflow with unsigned bigint (#2740) by @ti-chi-bot in https://github.com/pingcap/tispark/pull/2743 * Relealse 3.1.5 by @shiyuhang0 in https://github.com/pingcap/tispark/pull/2749 **Full Changelog**: https://github.com/pingcap/tispark/compare/v3.1.4...v3.1.5