DESCRIPTION: Drops PG13 Support
This commit is the first phase of dropping PG13 support.
It consists of the following:
- Removes pg13 from CI tests
Among other things, Citus upgrade tests should now use PG14.
Earliest Citus version supporting PG14 is 10.2.
We also pick 11.3 version for upgrade_pg_dist_cleanup tests.
Therefore, we run the citus upgrade tests with versions 10.2 and 11.3.
- Removes pg13 from configure script
- Remove upgrade_columnar_metapage upgrade tests
We populate first_row_number column of columnar.stripe table
during citus 10.1-10.2 upgrade. Given that we start from citus 10.2.0,
which is the oldest version supporting PG14, we don't have that
upgrade path anymore. Hence we remove these tests.
- Removes upgrade_pg_dist_object_test and upgrade_partition_constraints tests
These upgrade tests require the citus old version to be less than 10.0.
Given that we drop support for PG13, we run upgrade tests with PG14,
which starts with 10.2.
So we remove these upgrade tests.
- Documents that upgrade_post_11 should upgrade from version less than 11
In this way we make sure we run
citus_finalize_upgrade_to_citus11 script
- Adds needed alternative output for upgrade_citus_finish_citus_upgrade
Given that we use 11.3 as the citus old version as well,
we add this alternative output because pg_catalog.citus_finish_citus_upgrade()
makes sense if last_upgrade_major_version < 11. See below for reference:
pg_catalog.citus_finish_citus_upgrade():
...
IF last_upgrade_major_version < 11 THEN
PERFORM citus_finalize_upgrade_to_citus11();
performed_upgrade := true;
END IF;
IF NOT performed_upgrade THEN
RAISE NOTICE 'already at the latest distributed
schema version (%)', last_upgrade_version_string;
RETURN;
END IF;
...
And that's it :)
The second phase of dropping PG13 support will consist in removing
all the PG13 specific compilation paths/tests in the Citus repo.
Will be done soon.
There are 3 different ways that a sequence can be interacting
with tables. (1) and (2) are already supported. This commit adds
support for (3).
(1) column DEFAULT nextval('seq'):
The dependency is roughly like below,
and ExpandCitusSupportedTypes() is responsible
for finding the depending sequences.
schema <--- table <--- column <---- default value
^ |
|------------------ sequence <--------|
(2) serial columns: Bigserial/small serial etc:
The dependency is roughly like below,
and ExpandCitusSupportedTypes() is responsible
for finding the depending sequences.
schema <--- table <--- column <---- default value
^ |
| |
sequence <--------|
(3) Sequence OWNED BY table.column: Added support for
this type of resolution in this commit.
The dependency is almost like the following, and
ExpandCitusSupportedTypes() is NOT responsible for finding
the dependency.
schema <--- table <--- column
^
|
sequence
We have a mechanism which ensures that newly distributed
objects are recorded during `alter extension citus update`.
However, the logic was lacking "view"s. With this commit, we make
sure that existing views are also marked as distributed during
upgrade.
Clusters created pre-Citus 11 mostly didn't have metadata sync enabled.
For those clusters, we add a utility UDF which fixes some minor issues
and sync the necessary objects to the workers.
Naisila Puka
Onder Kalaci