InvalidateForeignKeyGraph sends an invalidation via shared memory to all
backends, including the current one.
However, we might not call AcceptInvalidationMessages before reading
from the cache below. It would be better to also add a call to
AcceptInvalidationMessages in IsForeignConstraintRelationshipGraphValid.
* Reimplement citus_update_table_statistics
* Update stats for the given table not colocation group
* Add tests for reimplemented citus_update_table_statistics
* Use coordinated transaction, merge with citus_shard_sizes functions
* Update the old master_update_table_statistics as well
On top of our foreign key graph, implement the infrastructure to get
list of relations that are connected to input relation via a foreign key
graph.
We need this to support cascading create_citus_local_table &
undistribute_table operations.
Also add regression tests to see what our foreign key graph is able to
capture currently.
Ahmet Gedemenli
Hanefi Onaldi
Naisila Puka
Onur Tirtir
SaitTalhaNisanci
velioglu