Following scenario resulted in distributed deadlock before this commit:
CREATE TABLE partitioning_test(id int, time date) PARTITION BY RANGE (time);
CREATE TABLE partitioning_test_2009 (LIKE partitioning_test);
CREATE TABLE partitioning_test_reference(id int PRIMARY KEY, subid int);
SELECT create_distributed_table('partitioning_test_2009', 'id'),
create_distributed_table('partitioning_test', 'id'),
create_reference_table('partitioning_test_reference');
ALTER TABLE partitioning_test ADD CONSTRAINT partitioning_reference_fkey FOREIGN KEY (id) REFERENCES partitioning_test_reference(id) ON DELETE CASCADE;
ALTER TABLE partitioning_test_2009 ADD CONSTRAINT partitioning_reference_fkey_2009 FOREIGN KEY (id) REFERENCES partitioning_test_reference(id) ON DELETE CASCADE;
ALTER TABLE partitioning_test ATTACH PARTITION partitioning_test_2009 FOR VALUES FROM ('2009-01-01') TO ('2010-01-01');
We disable bunch of planning options on the workers. This might be
risky if any concurrent test relies on EXPLAIN OUTPUT as well. Still,
we want to keep this test, so we should try to not parallelize this
test with such test.
PG now allows foreign keys on partitioned tables.
Each foreign key constraint on partitioned table
is propagated down to partitions.
We used to create all constraints on shards when we are creating
a new shard, or when just simply moving a shard from one worker
to another. We also used the same logic when creating a copy of
coordinator table in mx node.
With this change we create the constraint on worker node only if
it is not an inherited constraint.
With this commit, we all partitioned distributed tables with
replication factor > 1. However, we also have many restrictions.
In summary, we disallow all kinds of modifications (including DDLs)
on the partition tables. Instead, the user is allowed to run the
modifications over the parent table.
The necessity for such a restriction have two aspects:
- We need to acquire shard resource locks appropriately
- We need to handle marking partitions INVALID in case
of any failures. Note that, in theory, the parent table
should also become INVALID, which is too aggressive.
Reason for the failure is that PG11 introduced a new relation kind
RELKIND_PARTITIONED_INDEX to be used for partitioned indices.
We expanded our check to cover that case.
- changes in ruleutils_11.c is reflected
- vacuum statement api change is handled. We now allow
multi-table vacuum commands.
- some other function header changes are reflected
- api conflicts between PG11 and earlier versions
are handled by adding shims in version_compat.h
- various regression tests are fixed due output and
functionality in PG1
- no change is made to support new features in PG11
they need to be handled by new commit
While attaching a partition to a distributed table in schema, we mistakenly
used unqualified name to find partitioned table's oid. This caused problems
while using partitioned tables with schemas. We are fixing this issue in
this PR.
Marco Slot
Onder Kalaci
Hadi Moshayedi
Murat Tuncer
mehmet furkan şahin
Burak Yucesoy