mirror of https://github.com/citusdata/citus.git
146 lines
4.4 KiB
Markdown
146 lines
4.4 KiB
Markdown
### citus v5.2.1 (September 6, 2016) ###
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* Fixes subquery pushdown to properly extract outer join qualifiers
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* Addresses possible memory leak during multi-shard transactions
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### citus v5.2.0 (August 15, 2016) ###
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* Drops support for PostgreSQL 9.4; PostgreSQL 9.5 is required
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* Adds schema support for tables, other named objects (types, operators, etc.)
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* Evaluates non-immutable functions on master in all modification commands
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* Adds support for SERIAL types in non-partition columns
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* Adds support for RETURNING clause in INSERT, UPDATE, and DELETE commands
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* Adds support for multi-statement transactions involving a fixed set of nodes
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* Full SQL support for SELECT queries which can be executed on a single worker
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* Adds option to perform DDL changes using prepared transactions (2PC)
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* Adds an `enable_ddl_propagation` parameter to control DDL propagation
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* Accelerates shard pruning during merges
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* Adds `master_modify_multiple_shards` UDF to modify many shards at once
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* Adds COPY support for arrays of user-defined types
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* Now supports parameterized prepared statements for certain use cases
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* Extends LIMIT/OFFSET support to all executor types
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* Constraint violations now fail fast rather than hitting all placements
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* Makes `master_create_empty_shard` aware of shard placement policy
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* Reduces unnecessary sleep during queries processed by real-time executor
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* Improves task tracker executor's task cleanup logic
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* Relaxes restrictions on cancellation of DDL commands
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* Removes ONLY keyword from worker SELECT queries
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* Error message improvements and standardization
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* Moves `master_update_shard_statistics` function to `pg_catalog` schema
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* Fixes a bug where hash-partitioned anti-joins could return incorrect results
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* Now sets storage type correctly for foreign table-backed shards
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* Fixes `master_update_shard_statistics` issue with hash-partitioned tables
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* Fixes an issue related to extending table names that require escaping
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* Reduces risk of row counter overflows during modifications
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* Fixes a crash related to FILTER clause use in COUNT DISTINCT subqueries
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* Fixes crashes related to partition columns with high attribute numbers
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* Fixes certain subquery and join crashes
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* Detects flex for build even if PostgreSQL was built without it
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* Fixes assert-enabled crash when `all_modifications_commutative` is true
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### citus v5.2.0-rc.1 (August 1, 2016) ###
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* Initial 5.2.0 candidate
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### citus v5.1.1 (June 17, 2016) ###
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* Adds complex count distinct expression support in repartitioned subqueries
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* Improves task tracker job cleanup logic, addressing a memory leak
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* Fixes bug that generated incorrect results for LEFT JOIN queries
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* Improves compatibility with Debian's reproducible builds project
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* Fixes build issues on FreeBSD platforms
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### citus v5.1.0 (May 17, 2016) ###
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* Adds distributed COPY to rapidly populate distributed tables
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* Adds support for using EXPLAIN on distributed queries
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* Recognizes and fast-paths single-shard SELECT statements automatically
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* Increases INSERT throughput via shard pruning optimizations
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* Improves planner performance for joins involving tables with many shards
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* Adds ability to pass columns as arguments to function calls in UPDATEs
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* Introduces transaction manager for use by multi-shard commands
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* Adds COUNT(DISTINCT ...) pushdown optimization for hash-partitioned tables
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* Adds support for certain UNIQUE indexes on hash- or range-partitioned tables
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* Deprecates \stage in favor of using COPY for append-partition tables
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* Deprecates `copy_to_distributed_table` in favor of first-class COPY support
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* Fixes build problems when using non-packaged PostgreSQL installs
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* Fixes bug that sometimes skipped pruning when partitioned by a VARCHAR column
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* Fixes bug impeding use of user-defined functions in repartitioned subqueries
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* Fixes bug involving queries with equality comparisons of boolean types
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* Fixes crash that prevented use alongside `pg_stat_statements`
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* Fixes crash arising from SELECT queries that lack a target list
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* Improves warning and error messages
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### citus v5.1.0-rc.2 (May 10, 2016) ###
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* Fixes test failures
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* Fixes EXPLAIN output when FORMAT JSON in use
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### citus v5.1.0-rc.1 (May 4, 2016) ###
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* Initial 5.1.0 candidate
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### citus v5.0.1 (April 15, 2016) ###
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* Fixes issues on 32-bit systems
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### citus v5.0.0 (March 24, 2016) ###
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* Public release under AGPLv3
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* PostgreSQL extension compatible with PostgreSQL 9.5 and 9.4
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