2023.03.22 16:59:48.920117 [ 233 ] {}<Error>db.table (ReplicatedMergeTreeRestartingThread): Couldn't start replication (table will be in readonly mode): Transaction failed (No node): Op #1, path: /clickhouse/tables/cluster_1st-1/db/table/replicas/clickhouse-cluster-1.clickhouse-cluster-headl...
2 replicas: One running today's master from a few hours ago: 22.7.1.906 The second one running 22.3: 22.3.7.28 First replica log: 2022.06.29 15:57:31.411310 [ 2688 ] {624ac50a-bc6c-4008-bdea-f927e2f73ae9} <Debug> executeQuery: (from 10.3...
SYSTEM REPLICATED SENDS. 级别: TABLE. 别名: SYSTEM STOP REPLICATED SENDS, SYSTEM START REPLICATED SENDS, STOP REPLICATED SENDS, START REPLICATED SENDS SYSTEM REPLICATION QUEUES. 级别: TABLE. 别名: SYSTEM STOP REPLICATION QUEUES, SYSTEM START REPLICATION QUEUES, STOP REPLICATION QUEUES, START REPLICATION...
1. --- DB::Exception: user `john`: cannot insert because user `john` already exists in local directory: Couldn't insert user `john`. Successfully inserted: none. 2.创建角色(Create Role) 创建角色,角色是一组权限。分配了角色的用户获得该角色的所有权限。 CREATE ROLE [IF NOT EXISTS | OR RE...
ClickHouse is easy to set up and run, so you can start working in minutes. But what about further details like data replication, distributed set up, choosing of table engines, and indexes? Couldn't they be so simple too? Probably not. But at least they can be understandable. This book ...
Support for the ALTER TABLE t [REPLACE|ATTACH] PARTITION query for *MergeTree tables. Support for the TRUNCATE TABLE query (Winter Zhang) Several new SYSTEM queries for replicated tables (RESTART REPLICAS, SYNC REPLICA, [STOP|START] [MERGES|FETCHES|SENDS REPLICATED|REPLICATION QUEUES]). Added the...
See Replication. Sets the time in seconds. If a replica's lag is greater than or equal to the set value, this replica is not used. Possible values: Positive integer. 0— Replica lags are not checked. To prevent the use of any replica with a non-zero lag, set this parameter to 1....
2020.06.19 16:49:13.576855 [ 17 ] {} <Error> DB_0.school (ReplicatedMergeTreeRestartingThread): Couldn't start replication: Replica /clickhouse/tables/shard_0/school/replicas/replica_0732646014 appears to be already active. If you're sure it's not, try again in a minute or remove znode ...
people (ReplicatedMergeTreeRestartingThread): Couldn't start replication: Replica /clickhouse/tables/shard_0/people/replicas/replica_0732646014 appears to be already active. If you're sure it's not, try again in a minute or remove znode /clickhouse/tables/shard_0/people/replicas/replica_0732646014...
自动去重更多详情可参见 Data Replication。 ClickHouse 分布式表的 sharding_key 创建分布式表时,语句中的 ENGINE = Distributed(cluster_name, database_name, table_name[, sharding_key]); 中sharding_key 需为 Flink SQL 的 sink 表中的主键(Primary Key),以保证同一个 Primary Key 的记录写入到同一个节点...