2908有存在：
MySQL [information_schema]> select tidb_table_id,table_schema,table_name from information_schema.tables where TIDB_TABLE_ID in (2907,2908,2909);
+---------------+--------------+---------------+
| tidb_table_id | table_schema | table_name |
+---------------+--------------+---------------+
| 2908 | passport_dev | log_user_type |
+---------------+--------------+---------------+
pd上面 enable-cross-table-merge 默认就是false：
» config show
{
"replication": {
"enable-placement-rules": "true",
"enable-placement-rules-cache": "false",
"isolation-level": "",
"location-labels": "",
"max-replicas": 3,
"strictly-match-label": "false"
},
"schedule": {
"enable-cross-table-merge": "false",
"enable-joint-consensus": "true",
"high-space-ratio": 0.7,
"hot-region-cache-hits-threshold": 3,
"hot-region-schedule-limit": 16,
"hot-regions-reserved-days": 0,
"hot-regions-write-interval": "10m0s",
"leader-schedule-limit": 64,
"leader-schedule-policy": "count",
"low-space-ratio": 0.95,
"max-merge-region-keys": 200000,
"max-merge-region-size": 128,
"max-pending-peer-count": 128,
"max-snapshot-count": 3,
"max-store-down-time": "30m0s",
"merge-schedule-limit": 64,
"patrol-region-interval": "10ms",
"region-schedule-limit": 128,
"region-score-formula-version": "",
"replica-schedule-limit": 1024,
"split-merge-interval": "1h0m0s",
"tolerant-size-ratio": 0
}
}