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  • YUGABYTEDB CORE
    • Quick start
      • 1. Install YugabyteDB
      • 2. Create a local cluster
      • 3. Explore distributed SQL
      • 4. Build an application
        • Java
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        • Go
        • Python
        • Ruby
        • C#
        • PHP
        • C++
        • C
        • Scala
    • Explore features
      • YSQL vs PostgreSQL
        • Schemas and Tables
        • Data Types
        • Data Manipulation
        • Cursors
        • Expressions and Operators
        • Queries and Joins
        • Stored Procedures
        • Table Partitioning
        • Tablespaces
        • Triggers
        • Views
      • Fault tolerance
      • Horizontal Scalability
        • Scaling Transactions
        • Sharding Data
      • Transactions
        • Distributed Transactions
        • Isolation Levels
        • Explicit Locking
      • JSON Support
      • Multi-Region Deployments
        • Sync replication (3+ regions)
        • Async Replication (2+ regions)
        • Row-Level Geo-Partitioning
      • Query Optimization
        • Analyzing Queries with EXPLAIN
        • Optimizing YSQL queries using pg_hint_plan
      • Follower reads
      • Colocated tables
      • Change data capture (CDC)
      • Extensions
      • Observability
        • Prometheus Integration
    • Develop
      • Learn app development
        • 1. SQL vs NoSQL
        • 2. Data modeling
        • 3. Data types
        • 4. ACID transactions
        • 5. Aggregations
        • 6. Batch operations
        • 7. Date and time
        • 8. Strings and text
        • 9. TTL for data expiration
      • Ecosystem integrations
        • Apache Kafka
        • Spring Framework
        • Apache Spark
        • JanusGraph
        • KairosDB
        • Presto
        • Metabase
      • Build GraphQL apps
        • Hasura
        • Prisma
      • Real-world examples
        • E-Commerce app
        • IoT fleet management
        • Retail Analytics
      • Explore sample apps
      • Best practices
    • Migrate
      • Migration process overview
      • Migrate from PostgreSQL
        • Convert a PostgreSQL schema
        • Migrate a PostgreSQL application
        • Export PostgreSQL data
        • Prepare a cluster
        • Import PostgreSQL data
        • Verify Migration
    • Deploy
      • Deployment checklist
      • Manual deployment
        • 1. System configuration
        • 2. Install software
        • 3. Start YB-Masters
        • 4. Start YB-TServers
        • 5. Verify deployment
      • Kubernetes
        • Single-zone
          • Open Source
          • Amazon EKS
          • Google Kubernetes Engine
          • Azure Kubernetes Service
        • Multi-zone
          • Amazon EKS
          • Google Kubernetes Engine
        • Multi-cluster
          • Google Kubernetes Engine
        • Best practices
        • Connect Clients
      • Docker
      • Public clouds
        • Amazon Web Services
        • Google Cloud Platform
        • Microsoft Azure
      • Multi-DC deployments
        • Three+ data center (3DC)
        • Two data center (2DC)
        • Read replica clusters
      • Change data capture (CDC)
        • CDC to Kafka
    • Benchmark
      • TPC-C
      • sysbench
      • YCSB
      • Key-value workload
      • Large datasets
      • Scalability
        • Scaling queries
      • Resilience
        • Jepsen testing
      • Performance Troubleshooting
    • Secure
      • Security checklist
      • Enable Authentication
        • Enable User Authentication
        • Configure ysql_hba_conf_csv
      • Authentication Methods
        • Password Authentication
        • LDAP Authentication
        • Host-Based Authentication
        • Trust Authentication
      • Role-Based Access Control
        • Overview
        • Manage Users and Roles
        • Grant Privileges
        • Row-Level Security (RLS)
        • Column-Level Security
      • Encryption in Transit
        • Create server certificates
        • Enable server-to-server encryption
        • Enable client-to-server encryption
        • Connect to Clusters
      • Encryption at rest
      • Column-Level Encryption
      • Audit Logging
        • Configure Audit Logging
        • Session-Level Audit Logging
        • Object-Level Audit Logging
      • Vulnerability disclosure policy
    • Manage
      • Back up and restore
        • Back up data
        • Restore data
        • Point-in-time restore
        • Snapshot and restore data
      • Migrate data
        • Bulk import
        • Bulk export
      • Change cluster configuration
      • Diagnostics reporting
      • Upgrade a deployment
      • Grow cluster
    • Troubleshoot
      • Troubleshooting
      • Common error messages
      • Cluster level issues
        • YCQL connection issues
        • YEDIS connection Issues
        • Recover tserver/master
        • Replace a failed YB-TServer
        • Replace a failed YB-Master
        • Manual remote bootstrap when a majority of peers fail
      • Node level issues
        • Check servers
        • Inspect logs
        • System statistics
        • Disk failure
    • Contribute
      • Core database
        • Contribution checklist
        • Build the source
        • Configure a CLion project
        • Run the tests
  • YUGABYTE PLATFORM
    • Yugabyte Platform
      • Overview
        • Install
        • Configure
      • Install Yugabyte Platform
        • Prerequisites
        • Prepare the environment
        • Install software
        • Prepare nodes (on-prem)
        • Uninstall software
      • Configure Yugabyte Platform
        • Create admin user
        • Configure the cloud provider
        • Configure the backup target
        • Configure alerts and health checking
        • Create and edit instance tags
      • Create deployments
        • Multi-zone universe
        • Multi-region universe
        • Read replica cluster
      • Manage deployments
        • Start and stop processes
        • Add a node
        • Enable high availability
        • Remove a node
        • Edit a universe
        • Edit configuration flags
        • Upgrade the YugabyteDB software
        • Delete a universe
        • Migrate to Helm 3
      • Back up and restore universes
        • Configure backup storage
        • Back up universe data
        • Restore universe data
        • Schedule data backups
      • Security
        • Security checklist
        • Customize ports
        • Authorization platform
        • Create a KMS configuration
        • Enable encryption at rest
        • Enable encryption in transit (TLS)
        • Network security
      • Alerts and monitoring
        • Live Queries dashboard
        • Slow Queries dashboard
      • Troubleshoot
        • Install and upgrade issues
        • Universe issues
      • Administer Yugabyte Platform
        • Back up and restore Yugabyte Platform
        • Back up and restore Yugabyte Platform - K8s
  • YUGABYTE CLOUD
    • Yugabyte Cloud
      • Free tier
      • Create clusters
      • Monitor clusters
      • Create databases
      • Manage database access
      • Connect to clusters
  • REFERENCE
    • Reference
    • Architecture
      • Design goals
      • Key concepts
        • Universe
        • YB-TServer Service
        • YB-Master Service
      • Core functions
        • Universe creation
        • Table creation
        • Write IO path
        • Read IO path
        • High availability
      • Layered architecture
      • Query layer
        • Overview
      • DocDB transactions layer
        • Transactions overview
        • Transaction isolation levels
        • Explicit locking
        • Single-row transactions
        • Distributed transactions
        • Transactional IO path
      • DocDB sharding layer
        • Hash & range sharding
        • Tablet splitting
        • Colocated tables
      • DocDB replication layer
        • Replication
        • xCluster replication
        • Read replicas
        • Change data capture (CDC)
      • DocDB storage layer
        • Persistence
        • Performance
    • APIs
      • YSQL
        • The SQL language
          • SQL statements
            • ABORT
            • ALTER DATABASE
            • ALTER DEFAULT PRIVILEGES
            • ALTER DOMAIN
            • ALTER GROUP
            • ALTER POLICY
            • ALTER ROLE
            • ALTER SEQUENCE
            • ALTER TABLE
            • ALTER USER
            • BEGIN
            • CALL
            • COMMENT
            • COMMIT
            • COPY
            • CREATE AGGREGATE
            • CREATE CAST
            • CREATE DATABASE
            • CREATE DOMAIN
            • CREATE EXTENSION
            • CREATE FUNCTION
            • CREATE GROUP
            • CREATE INDEX
            • CREATE OPERATOR
            • CREATE OPERATOR CLASS
            • CREATE POLICY
            • CREATE PROCEDURE
            • CREATE ROLE
            • CREATE RULE
            • CREATE SCHEMA
            • CREATE SEQUENCE
            • CREATE TABLE
            • CREATE TABLE AS
            • CREATE TRIGGER
            • CREATE TYPE
            • CREATE USER
            • CREATE VIEW
            • DEALLOCATE
            • DELETE
            • DO
            • DROP AGGREGATE
            • DROP CAST
            • DROP DATABASE
            • DROP DOMAIN
            • DROP EXTENSION
            • DROP FUNCTION
            • DROP GROUP
            • DROP OPERATOR
            • DROP OPERATOR CLASS
            • DROP OWNED
            • DROP POLICY
            • DROP PROCEDURE
            • DROP ROLE
            • DROP RULE
            • DROP SEQUENCE
            • DROP TABLE
            • DROP TRIGGER
            • DROP TYPE
            • DROP USER
            • END
            • EXECUTE
            • EXPLAIN
            • GRANT
            • INSERT
            • LOCK
            • PREPARE
            • REASSIGN OWNED
            • RESET
            • REVOKE
            • ROLLBACK
            • SELECT
            • SET
            • SET CONSTRAINTS
            • SET ROLE
            • SET SESSION AUTHORIZATION
            • SET TRANSACTION
            • SHOW
            • SHOW TRANSACTION
            • TRUNCATE
            • UPDATE
            • VALUES
          • WITH clause
            • WITH clause—SQL syntax and semantics
            • recursive CTE
            • case study—traversing an employee hierarchy
            • traversing general graphs
              • graph representation
              • common code
              • undirected cyclic graph
              • directed cyclic graph
              • directed acyclic graph
              • rooted tree
              • Unique containing paths
              • Stress testing find_paths()
            • case study—Bacon Numbers from IMDb
              • Bacon numbers for synthetic data
              • Bacon numbers for IMDb data
        • Data types
          • Array
            • array[] constructor
            • Literals
              • Text typecasting and literals
              • Array of primitive values
              • Row
              • Array of rows
            • FOREACH loop (PL/pgSQL)
            • array of DOMAINs
            • Functions and operators
              • ANY and ALL
              • Array comparison
              • Array slice operator
              • Array concatenation
              • Array properties
              • array_agg(), unnest(), generate_subscripts()
              • array_fill()
              • array_position(), array_positions()
              • array_remove()
              • array_replace() / set value
              • array_to_string()
              • string_to_array()
          • Binary
          • Boolean
          • Character
          • Date and time
          • JSON
            • JSON literals
            • Primitive and compound data types
            • Code example conventions
            • Indexes and check constraints
            • Functions & operators
              • ::jsonb, ::json, ::text (typecast)
              • ->, ->>, #>, #>> (JSON subvalues)
              • - and #- (remove)
              • || (concatenation)
              • = (equality)
              • @> and <@ (containment)
              • ? and ?| and ?& (key or value existence)
              • array_to_json()
              • jsonb_agg()
              • jsonb_array_elements()
              • jsonb_array_elements_text()
              • jsonb_array_length()
              • jsonb_build_object()
              • jsonb_build_array()
              • jsonb_each()
              • jsonb_each_text()
              • jsonb_extract_path()
              • jsonb_extract_path_text() and json_extract_path_text()
              • jsonb_object()
              • jsonb_object_agg()
              • jsonb_object_keys()
              • jsonb_populate_record()
              • jsonb_populate_recordset()
              • jsonb_pretty()
              • jsonb_set() and jsonb_insert()
              • jsonb_strip_nulls()
              • jsonb_to_record()
              • jsonb_to_recordset()
              • jsonb_typeof()
              • row_to_json()
              • to_jsonb()
          • Money
          • Numeric
          • Range
          • Serial
          • UUID
        • Functions and operators
          • Aggregate functions
            • Informal functionality overview
            • Invocation syntax and semantics
            • grouping sets, rollup, cube
            • Per function signature and purpose
              • avg(), count(), max(), min(), sum()
              • array_agg(), string_agg(), jsonb_agg(), jsonb_object_agg()
              • bit_and(), bit_or(), bool_and(), bool_or()
              • variance(), var_pop(), var_samp(), stddev(), stddev_pop(), stddev_samp()
              • linear regression
                • covar_pop(), covar_samp(), corr()
                • regr_%()
              • mode(), percentile_disc(), percentile_cont()
              • rank(), dense_rank(), percent_rank(), cume_dist()
            • case study—percentile_cont() and the "68–95–99.7" rule
            • case study—linear regression on COVID data
              • Download the COVIDcast data
              • Ingest the COVIDcast data
                • Inspect the COVIDcast data
                • Copy the .csv files to staging tables
                • Check staged data conforms to the rules
                • Join the staged data into a single table
                • SQL scripts
                  • Create cr_staging_tables()
                  • Create cr_copy_from_scripts()
                  • Create assert_assumptions_ok()
                  • Create xform_to_covidcast_fb_survey_results()
                  • ingest-the-data.sql
              • Analyze the COVIDcast data
                • symptoms vs mask-wearing by day
                • Data for scatter-plot for 21-Oct-2020
                • Scatter-plot for 21-Oct-2020
                • SQL scripts
                  • analysis-queries.sql
                  • synthetic-data.sql
          • currval()
          • lastval()
          • nextval()
          • Window functions
            • Informal functionality overview
            • Invocation syntax and semantics
            • Per function signature and purpose
              • row_number(), rank() and dense_rank()
              • percent_rank(), cume_dist() and ntile()
              • first_value(), nth_value(), last_value()
              • lag(), lead()
              • Tables for the code examples
                • table t1
                • table t2
                • table t3
                • table t4
            • case study—analyzing a normal distribution
              • Bucket allocation scheme
              • do_clean_start.sql
              • cr_show_t4.sql
              • cr_dp_views.sql
              • cr_int_views.sql
              • cr_pr_cd_equality_report.sql
              • cr_bucket_using_width_bucket.sql
              • cr_bucket_dedicated_code.sql
              • do_assert_bucket_ok
              • cr_histogram.sql
              • cr_do_ntile.sql
              • cr_do_percent_rank.sql
              • cr_do_cume_dist.sql
              • do_populate_results.sql
              • do_report_results.sql
              • do_compare_dp_results.sql
              • do_demo.sql
              • Reports
                • Histogram report
                • dp-results
                • compare-dp-results
                • int-results
        • Extensions
        • Keywords
        • Reserved names
      • YCQL
        • ALTER KEYSPACE
        • ALTER ROLE
        • ALTER TABLE
        • CREATE INDEX
        • CREATE KEYSPACE
        • CREATE ROLE
        • CREATE TABLE
        • CREATE TYPE
        • DROP INDEX
        • DROP KEYSPACE
        • DROP ROLE
        • DROP TABLE
        • DROP TYPE
        • GRANT PERMISSION
        • GRANT ROLE
        • REVOKE PERMISSION
        • REVOKE ROLE
        • USE
        • INSERT
        • SELECT
        • EXPLAIN
        • UPDATE
        • DELETE
        • TRANSACTION
        • TRUNCATE
        • Simple expressions
        • Subscripted expressions
        • Function call
        • Operators
        • BLOB
        • BOOLEAN
        • Collection
        • FROZEN
        • INET
        • Integer and counter
        • Non-integer
        • TEXT
        • DATE, TIME, and TIMESTAMP
        • UUID and TIMEUUID
        • JSONB
        • Date and time
        • BATCH
    • CLIs
      • yb-ctl
      • yb-docker-ctl
      • ysqlsh
      • ycqlsh
      • yb-admin
      • yb-ts-cli
      • ysql_dump
      • ysql_dumpall
    • Configuration
      • yb-tserver
      • yb-master
      • yugabyted
      • Default ports
    • Drivers
      • Client drivers for YSQL API
      • YugabyteDB JDBC Driver
      • Client drivers for YCQL
      • Spring Data YugabyteDB
    • Connectors
      • Kafka Connect YugabyteDB
    • Third party tools
      • DBeaver
      • DbSchema
      • pgAdmin
      • SQL Workbench/J
      • TablePlus
      • Visual Studio Code
    • Sample datasets
      • Chinook
      • Northwind
      • PgExercises
      • SportsDB
  • RELEASES
    • Releases
    • Releases overview
    • Release versioning
    • What's new
      • v2.5 (latest)
      • v2.4 (stable)
    • Earlier releases
      • v2.3.3
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      • v2.3.1
      • v2.3.0
      • v2.2.0 series
      • v2.1.8
      • v2.1.6
      • v2.1.5
      • v2.1.4
      • v2.1.3
      • v2.1.2
      • v2.1.1
      • v2.1.0
      • v2.0.11
      • v2.0.10
      • v2.0.9
      • v2.0.8
      • v2.0.7
      • v2.0.6
      • v2.0.5
      • v2.0.3
      • v2.0.1
      • v2.0.0
      • v1.3.1
      • v1.3.0
      • v1.2.12
      • v1.2.11
      • v1.2.10
      • v1.2.9
      • v1.2.8
      • v1.2.6
      • v1.2.5
      • v1.2.4
  • FAQ
    • Comparisons
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      • MongoDB
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      • Amazon DynamoDB
      • Azure Cosmos DB
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      • Apache HBase
    • FAQs
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        • HLEN
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        • HMSET
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        • INCR
        • INCRBY
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> Earlier releases >

v2.0.0 release notes

  • Downloads
    • Binaries
    • Docker
  • Release highlight
  • File format change
  • YSQL changes
  • YCQL changes
  • System improvements

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.
  • Downloads
    • Binaries
    • Docker
  • Release highlight
  • File format change
  • YSQL changes
  • YCQL changes
  • System improvements
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