Release 2.0.0-rc1

This release adds major new features and bugfixes since the 1.7.4 release.
We deem it moderate priority for upgrading.

This release adds the long-awaited support for distributed hypertables to
TimescaleDB. With 2.0, users can run multiple instances of TimescaleDB,
configured so that one serves as an access node and multiple others as data
nodes, so that all queries for a distributed hypertable are issued to the access
node, but inserted data and queries are pushed down across data nodes for
greater scale and performance.

In addition to these major new features, the 2.0 branch introduces _breaking_ changes
to APIs and existing features, such as continuous aggregates. These changes are not
backwards compatible and might require changes to clients and/or scripts that rely on
the previous APIs. Please review our updated documentation and do proper testing to
ensure compatibility with your existing applications.

The noticeable breaking changes in APIs are:
- Redefined functions for policies
- A continuous aggregate is now created with `CREATE MATERIALIZED VIEW`
  instead of `CREATE VIEW` and automated refreshing requires adding a policy
  via `add_continuous_aggregate_policy`
- Redesign of informational views, including new (and more general) views for
  information about policies and user-defined actions

This release candidate is upgradable, so if you are on a previous release (e.g., 1.7.4)
you can upgrade to the release candidate and later expect to be able to upgrade to the
final 2.0 release. However, please carefully consider your compatibility requirements
_before_ upgrading.

**Major Features**
* timescale#1923 Add support for distributed hypertables
* timescale#2006 Add support for user-defined actions
* timescale#2435 Move enterprise features to community
* timescale#2437 Update Timescale License

**Minor Features**
* timescale#2011 Constify TIMESTAMPTZ OP INTERVAL in constraints
* timescale#2105 Support moving compressed chunks

**Bugfixes**
* timescale#1843 Improve handling of "dropped" chunks
* timescale#1886 Change ChunkAppend leader to use worker subplan
* timescale#2116 Propagate privileges from hypertables to chunks
* timescale#2263 Fix timestamp overflow in time_bucket optimization
* timescale#2270 Fix handling of non-reference counted TupleDescs in gapfill
* timescale#2325 Fix rename constraint/rename index
* timescale#2370 Fix detection of hypertables in subqueries
* timescale#2376 Fix caggs width expression handling on int based hypertables
* timescale#2416 Check insert privileges to create chunk
* timescale#2428 Allow owner change of continuous aggregate
* timescale#2436 Propagate grants in continuous aggregates

CHANGELOG.md

@@ -4,6 +4,60 @@
 `psql` with the `-X` flag to prevent any `.psqlrc` commands from
 accidentally triggering the load of a previous DB version.**
 
+## 2.0.0-rc1 (2020-10-06)
+
+This release adds major new features and bugfixes since the 1.7.4 release.
+We deem it moderate priority for upgrading.
+
+This release adds the long-awaited support for distributed hypertables to
+TimescaleDB. With 2.0, users can run multiple instances of TimescaleDB,
+configured so that one serves as an access node and multiple others as data
+nodes, so that all queries for a distributed hypertable are issued to the access 
+node, but inserted data and queries are pushed down across data nodes for
+greater scale and performance.
+
+In addition to these major new features, the 2.0 branch introduces _breaking_ changes
+to APIs and existing features, such as continuous aggregates. These changes are not
+backwards compatible and might require changes to clients and/or scripts that rely on
+the previous APIs. Please review our updated documentation and do proper testing to
+ensure compatibility with your existing applications.
+
+The noticeable breaking changes in APIs are:
+- Redefined functions for policies
+- A continuous aggregate is now created with `CREATE MATERIALIZED VIEW`
+  instead of `CREATE VIEW` and automated refreshing requires adding a policy
+  via `add_continuous_aggregate_policy`
+- Redesign of informational views, including new (and more general) views for
+  information about policies and user-defined actions
+
+This release candidate is upgradable, so if you are on a previous release (e.g., 1.7.4)
+you can upgrade to the release candidate and later expect to be able to upgrade to the
+final 2.0 release. However, please carefully consider your compatibility requirements
+_before_ upgrading.
+
+**Major Features**
+* #1923 Add support for distributed hypertables
+* #2006 Add support for user-defined actions
+* #2435 Move enterprise features to community
+* #2437 Update Timescale License
+
+**Minor Features**
+* #2011 Constify TIMESTAMPTZ OP INTERVAL in constraints
+* #2105 Support moving compressed chunks
+
+**Bugfixes**
+* #1843 Improve handling of "dropped" chunks
+* #1886 Change ChunkAppend leader to use worker subplan
+* #2116 Propagate privileges from hypertables to chunks
+* #2263 Fix timestamp overflow in time_bucket optimization
+* #2270 Fix handling of non-reference counted TupleDescs in gapfill
+* #2325 Fix rename constraint/rename index
+* #2370 Fix detection of hypertables in subqueries
+* #2376 Fix caggs width expression handling on int based hypertables
+* #2416 Check insert privileges to create chunk
+* #2428 Allow owner change of continuous aggregate
+* #2436 Propagate grants in continuous aggregates
+
 ## 2.0.0-beta6 (2020-09-14)
 
 **For beta releases**, upgrading from an earlier version of the

sql/CMakeLists.txt

@@ -96,6 +96,7 @@ set(MOD_FILES
   updates/1.7.1--1.7.2.sql
   updates/1.7.2--1.7.3.sql
   updates/1.7.3--1.7.4.sql
+  updates/1.7.4--2.0.0-rc1.sql
 )
 
 set(MODULE_PATHNAME "$libdir/timescaledb-${PROJECT_VERSION_MOD}")