Open annrpom opened 1 month ago
Here is an example of the inheritance (on a 9 node cluster):
root@127.0.0.1:26257/movr> CREATE TABLE test(i INT PRIMARY KEY, j INT) PARTITION BY LIST (i) (
-> PARTITION one_and_five VALUES IN (1, 5)
-> );
CREATE TABLE
root@127.0.0.1:26257/movr> ALTER PARTITION one_and_five OF TABLE test CONFIGURE ZONE USING gc.ttlseconds = 10;
CONFIGURE ZONE 1
Time: 73ms total (execution 73ms / network 0ms)
root@127.0.0.1:26257/movr> ALTER INDEX test@test_pkey CONFIGURE ZONE USING num_replicas = 4;
CONFIGURE ZONE 1
Time: 204ms total (execution 204ms / network 0ms)
-- Looking at the partition, at /Table/112/1/1, we see that the amount of replicas it has is what we set for its parent index:
root@127.0.0.1:26257/movr> select replicas from crdb_internal.ranges where start_pretty = '/Table/112/1/1';
replicas
-------------
{1,2,4,7}
(1 row)
Time: 149ms total (execution 148ms / network 0ms)
-- To emphasize this, let's set the amount of replicas on the table to be a different number:
root@127.0.0.1:26257/movr> alter table test configure zone using num_replicas = 7;
CONFIGURE ZONE 1
-- And we see that the amount of replicas on the table is:
root@127.0.0.1:26257/movr> select replicas from crdb_internal.ranges where start_pretty = '/Table/112';
replicas
-------------------
{1,3,4,5,6,7,9}
(1 row)
Time: 156ms total (execution 156ms / network 0ms)
-- But the one for our partition has stayed the same:
root@127.0.0.1:26257/movr> select replicas from crdb_internal.ranges where start_pretty = '/Table/112/1/1';
replicas
-------------
{1,2,4,7}
(1 row)
Time: 153ms total (execution 153ms / network 0ms)
We have this little note at the bottom of the replication zone variables subtitle here that states:
A partition will inherit from its parent index
Jira issue: DOC-10922