yugabyte-db
https://github.com/yugabyte/yugabyte-db
C++
YugaByteDB is a high-performance, transactional database for building distributed cloud services. It currently supports Redis API (as a true DB), Cassandra API and SQL is coming very soon.
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- Issues
- [YSQL][PgVector] ALTER COLUMN ... TYPE vector drops the dimensions of a column with a ybhnsw index: searches fail, vectors of any size get into the index
- [YSQL] Connection Manager: attach check misses a pooled backend that has readable data (port upstream Odyssey #1787)
- [YSQL][PgVector] ybhnsw index options (m, m0, ef_construction) are lost when ALTER COLUMN TYPE rebuilds the index, and in a plain ysql_dump
- [YSQL] [Concurrent DDL] Calling an overload right after a concurrent DROP FUNCTION fails with "cache lookup failed for function <oid>"
- [YSQL][ConnMgr] idle_session_timeout kills the pooled backend instead of timing out the idle client: other clients get 08006 and the idle client is never disconnected
- [YSQL] Cancelled statement is silently re-run and committed when a DDL bumps the catalog version while it runs (cancel and statement_timeout swallowed by the catalog-version retry)
- A YBA certificate error at bootstrap silently disables the failback lag check, even under onPhase2Timeout=fail
- [YSQL] Postmaster hangs forever in reaper: CleanupKilledProcess blocks on ProcArrayLock held by another SIGKILLed backend, YSQL down until tserver restart
- [YSQL] `TestYbQueryDiagnostics#testYbQueryDiagnosticsStatus` fails on release branches: yb_query_diagnostics_status...
- [BACKPORT 2026.1][#35832] DocDB: Allow in-place restore with vector indexes created after the snapshot (#35939)
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