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Measures reported by MySQLCluTransTest
Rollbacks are costly operations on the database. This test monitors the percentage of rollbacks happening for user transactions on each node of the target MySQL Cluster database server.
Outputs of the test : One set of results for each node in the target MySQL Cluster database server being monitored
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| User_commits |
Indicates the number of internal COMMIT commands issued on this node sduring the last measurement period. |
Number |
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| User_rollbacks |
Indicates the number of internal ROLLBACK commands issued on this node during the last measurement period. |
Number |
Ideally, there should be few user rollbacks happening. |
| Pct_rollbacks |
Indicates the number of internal rollbacks expressed as a percentage of the total transactions with this node. |
Percent |
Ideally, there should be few user rollbacks happening. |
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