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Build tested: 6.3.1-1 (#4234), CMAPI-1.6.3 (#619)
On a 3-node cluster, with PM1 being the master, PM2 and PM3 being the slaves, I was able to create a ColumnStore table on PM2, one of the slaves.
MariaDB [(none)]> create database db1;
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Query OK, 1 row affected (0.000 sec)
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MariaDB [(none)]> use db1
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Database changed
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MariaDB [db1]> create table t1 (c1 int) engine=columnstore;
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Query OK, 0 rows affected (0.677 sec)
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ColumnStore system catalog on PM2 showed the created table
MariaDB [db1]> use calpontsys
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Reading table information for completion of table and column names
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You can turn off this feature to get a quicker startup with -A
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Database changed
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MariaDB [calpontsys]> select * from systable;
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+-----------+--------+----------+------------+------------+------+------+-----------+-----------+-------------+---------------+
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| tablename | schema | objectid | createdate | lastupdate | init | next | numofrows | avgrowlen | numofblocks | autoincrement |
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+-----------+--------+----------+------------+------------+------+------+-----------+-----------+-------------+---------------+
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| quicktest | mytest | 3000 | 2022-04-09 | NULL | NULL | NULL | NULL | NULL | NULL | 0 |
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| orders | mytest | 3004 | 2022-04-09 | NULL | NULL | NULL | NULL | NULL | NULL | 0 |
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| lineitem | mytest | 3017 | 2022-04-09 | NULL | NULL | NULL | NULL | NULL | NULL | 0 |
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| t1 | db1 | 3037 | 2022-04-09 | NULL | NULL | NULL | NULL | NULL | NULL | 0 |
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+-----------+--------+----------+------------+------------+------+------+-----------+-----------+-------------+---------------+
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4 rows in set (0.025 sec)
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PM1 also showed the same system catalog information. But database db1 does not exist in PM1.
MariaDB [calpontsys]> use db1;
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ERROR 1049 (42000): Unknown database 'db1'
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MariaDB [calpontsys]> show databases;
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+---------------------+
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| Database |
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+---------------------+
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| calpontsys |
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| columnstore_info |
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| infinidb_querystats |
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| information_schema |
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| mysql |
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| mytest |
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| performance_schema |
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| sys |
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| test |
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+---------------------+
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9 rows in set (0.000 sec)
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There is no DDLProc or DMLProc processes running on PM2 and therefore it seems that table creation request was some how sent to PM1 for execution. But it did not check if db1 exists. It is safe to assume that the request was not send to MariaDB server on PM1, but to DDLProc instead.
The old behavior was that when trying to create a ColumnStore table on a slave node, ColumnStore would return an error indicating that tables need to be created on the master node (use to call the parent node). Now this integrity seem to have been broken.
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