This topic describes how a minor compaction is automatically triggered.
When the Active MemStore memory usage of a tenant reaches freeze_trigger_percentage * memstore_limit (where memstore_limit = tenant memory * memstore_limit_percentage), a freeze (the preparation for dumping) is automatically triggered. Then, the system schedules a dump internally. When the number of freezes (minor freezes) reaches a certain threshold, a major compaction is automatically triggered. For more information, see Automatically trigger a major compaction.
For more information about the memstore_limit_percentage and freeze_trigger_percentage parameters, see Modify minor compaction settings.