This topic describes the list of parameters for cluster instances.
| Parameter Name | Description | Default Value | Requires Restart | Valid Values |
|---|---|---|---|---|
| tcp_keepintvl | The time interval between two consecutive probes. Changes only take effect for newly established connections. | 6s | No | [1s-1d] |
| bf_cache_miss_count_threshold | Controls the trigger count for bloomfilter cache. When the number of macro block misses reaches this value, a bloomfilter cache is created. 0 means disabled. | 100 | No | [1-65535] |
| tcp_keepidle | Sets how long to wait before sending keepalive probe packets when no data is being sent on a connection. Changes only take effect for newly established connections. | 7200s | No | [1s-1d] |
| tcp_keepcnt | Maximum number of retries before closing an inactive connection. Changes only take effect for newly established connections. | 10 | No | [1-10000] |
| default_row_format | Default row format for MySQL compatibility. | dynamic | No | [redundant|compact|dynamic|compressed] |