我有 3 个节点集群，带有复制 2 和复制表stats。
最近看到副本数据库有延迟使用 /replica_satatus
db.stats: Absolute delay: 0. Relative delay: 0.
db2.stats: Absolute delay: 912916. Relative delay: 912916.
这里的数据来自 system.replication_queue
Row 1:
??????
database: db2
table: stats
replica_name: replica_2
position: 3
node_name: queue-0001743101
type: GET_PART
create_time: 2018-06-19 20:57:42
required_quorum: 0
source_replica: replica_1
new_part_name: 20180619_20180619_823572_823572_0
parts_to_merge: []
is_detach: 0
is_currently_executing: 0
num_tries: 917943
last_exception:
last_attempt_time: 2018-06-29 15:32:50
num_postponed: 118617
postpone_reason:
last_postpone_time: 2018-06-29 15:32:23
Row 2:
??????
database: db2
table: stats
replica_name: replica_2
position: 4
node_name: queue-0001743103 …clickhouse ×1