Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
Addressing Orphans by Attaching New Partitions
Look at the results of SHOW CLUSTER STATUS and SHOW PARTITIONS from the previous section.
ATTACH PARTITION x_test:1 on '127.0.0.1':10002;
SHOW CLUSTER STATUS;
+-----------+-------+----------+-----------+-------------+----------+---------+
| Host | Port | Database | Role | State | Position | Details |
+-----------+-------+----------+-----------+-------------+----------+---------+
| 127.0.0.1 | 10001 | x_test | Reference | replicating | 0:57 | |
| 127.0.0.1 | 10001 | x_test_0 | Master | online | 0:10 | |
| 127.0.0.1 | 10001 | x_test_1 | Replica | replicating | 0:10 | |
| 127.0.0.1 | 10002 | x_test | Reference | replicating | 0:57 | |
| 127.0.0.1 | 10002 | x_test_0 | Replica | replicating | 0:10 | |
| 127.0.0.1 | 10002 | x_test_1 | Master | online | 0:10 | |
+-----------+-------+----------+-----------+-------------+----------+---------+SHOW PARTITIONS;
+---------+-----------+-------+---------+--------+
| Ordinal | Host | Port | Role | Locked |
+---------+-----------+-------+---------+--------+
| 0 | 127.0.0.1 | 10001 | Master | 0 |
| 0 | 127.0.0.1 | 10002 | Replica | 0 |
| 1 | 127.0.0.1 | 10001 | replica | 0 |
| 1 | 127.0.0.1 | 10002 | Master | 0 |
+---------+-----------+-------+---------+--------+Warning
Do not run high level commands (REBALANCE PARTITIONS, RESTORE REDUNDANCY, DETACH LEAF, etc.
If your cluster has many partitions, you may want to count its partitions by role to help identify any orphaned partitions.
Last modified: April 27, 2023