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 create distributed hypertables across
multiple instances of TimescaleDB, configured so that one instance serves
as an access node and multiple others as data nodes. 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.
This release also adds support for user-defined actions allowing users to
define actions that are run by the TimescaleDB automation framework.
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 ofCREATE VIEWand automated refreshing requires adding a policy
viaadd_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
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