v2.0.0 release notes

Released September 17, 2019.

Downloads

Binaries

Docker

docker pull yugabytedb/yugabyte:2.0.0.0-b16

Release highlight

YSQL is now generally available and is ready for production deployments. Details available in Announcing YugabyteDB 2.0 GA: Jepsen Tested, High-Performance Distributed SQL .

File format change

Note

Version 2.0 release includes a backward incompatible file format change for YSQL. Note: Prior to 2.0, YSQL was still in beta. This means that if you have an existing cluster running releases older than 2.0 with YSQL enabled, then you will not be able to upgrade to version 2.0 or higher release.

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 2.0.x.x
If you want to continue using your existing data, then please save your data, delete the cluster, create a new cluster with 2.0.x.x and then load the previously saved data.

YSQL changes

[YSQL] Add CREATE TABLE tablet splits to grammar. #1486
[YSQL] Allow ALTER TABLE ALTER COLUMN SET|DROP NOT NULL. #1200
[YSQL] Add retry logic to pgbench. #2058
[YSQL] Optimize single-row UPDATE and DELETE statements. #1028
[YSQL] IN predicate pushdown. #1554
[YSQL] Add top-level YSQL configuration gflag settings. #1140
[YSQL] Add support for various ALTER TABLE ADD COLUMN variants. #2055
[YSQL] Support UDTs and records. #1676
[YSQL] Order range columns with respect to primary key description. #1250
[YSQL] Support ALTER TABLE ADD COLUMN with default value. #2055
[YSQL] Enable ANALYZE, VACUUM in grammar. #2217
[YSQL] Non-transactional COPY in YSQL. #1926
[YSQL] CREATE AGGREGATE, DROP AGGREGATE, CAST, OPERATOR, OPERATOR CLASS. #1981
[YSQL] Create yugabyte user and yugabyte as default user and database. #2277

YCQL changes

[YCQL] Fixed TS crash if a built-in function argument is a column. #1944

System improvements

Propagate intents apply failure to client. #1974
Check shutdown state while scheduling compaction. #2100
Add leader check on master TS Write interface. #1995
Correctly handle duplicate key in postgres layer. #2012
Remove StopWatch from RocksDB Seek. #2136
Avoid picking read time for the serializable transactions. #2125
CDC: Producer and consumer master handshake to set up 2DC. #1977
Optimized Drop Table Locking. #2056
Reduce number of sys_catalog writes: skip no change heartbeats. #1966
CDC: Consumer changes. #1481
CDC: Add master-master replication support. #1824
Increase WAL retention time when CDC stream is setup on table. #2050
Apply changes received from producer universe. #2153
CDC: Delete for DROP DATABASE. #2114
Show Load Balancer state in Master UI. #646
Add support for error code categories to Status. #2200
[2DC] Handle RPC controller errors and CDC consumer shutdown. #2231
Don't apply transactions on tablets without intents. #2070
Allow dynamic priorities in PriorityThreadPool. #2004
Added rocksdb_universal_compaction_always_include_size_threshold. #2085
Do full table name match while finding matching tables in 2DC. #2250
Fix cleaning Raft log after transactional writes are stopped. #2221
Fix handling of calls expired in queue. #2269
Load balancer should not be considered idle when tablet remote bootstrap. #2193
[YSQL]: Fix number of tablets created for system tables. #2293
Reduce fan-out and use tablet invoker for writing data.
SerializableReadWriteConflict needs better success probability.