v1.2.11 Release Notes

Released June 25, 2019.

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File Format Change

There are two ways to address the above note.

• If you don't care about preserving your existing data, then delete your cluster, and create a new cluster with 1.2.11.
• If you want to continue using your existing data, then please save your data (in the form of SQL statements), delete the cluster, create a new cluster with 1.2.11 and then load the previously saved data.

YSQL Changes

• [YSQL] Lower prefetch limit to 1024 from 4098.#1206
• [YSQL] REPEATABLE READ should be mapped to snapshot isolation, not to serializable
• [YSQL] Error message on tserver startup: could not open directory 'pg_snapshots'.#1489
• [YSQL] Fixed logging setup.#1230
• [YSQL] Force use C locale.#986
• [YSQL] Distinguish tables with same keyspace+name but different schema in master UI.#1525
• [YSQL] Fix line editing in ysqlsh (psql) on Linux.#764
• [YSQL] Show table UUIDs in tablet server web UI.#1525
• [YSQL] Feature Support - FUNCTION and PROCEDURE.1155
• [YSQL] Allow WITH clauses in CREATE TABLE.#870
• [YSQL] Improve performance when executing LIMIT clause.#1204

YCQL Changes

• [YCQL] Bulk loader improvements.#1543

System Improvements

• Universe Key Integration for Encryption at Rest.#1364
• Store tserver metrics in system YCQL table.#1021
• Fix rocksdb checkpoint.#1491
• CDCService GetChanges RPC.#1168
• Update cql_nodelist_refresh_interval_secs to default to 300 sec#1471
• Add more commands to yugabyte-db: status, connect, version, destroy
• Intents DB should not request flush of Regular DB when it is already flushing.#1499
• Add versioning to yb-master JSON API.#1372
• Master concurrency improvements and benchmark for GetTableLocations.#1540
• Preparation diff. Use single writer skiplist in DocDB.#1240
• Take stack traces in parallel.#1509
• Jepsen-related changes to remote_release.py,#938
• Fix remote bootstrap log anchoring.#1485
• Preparation: Auto memory management for Compaction object.#1314
• Check if load balancer is active instead of checking whether distribution of tablets across tservers is nearly uniform.#1336
• Fix EnumerateIntents and add a test to capture conflicts at hash key level in serializable isolation.#1465
• Print enhanced tcmalloc stats to /memz.#1585
• Add clearer error message if YB data dir can't be created.#295