Important
Self-managed SingleStore will soon transition from version 9.1 RC to version 10. This new semantic versioning scheme will provide SingleStore with finer control over engine and feature releases that were not possible with the current versioning scheme.
In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10 prior to its general availability. Ahead of this transition, SingleStore 9.0 is recommended for production workloads, which can later be upgraded to SingleStore 10.
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.
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