I have 3 ClickHouse v21.11.4.14 servers with some replicated tables on them. On one (the elder one and the only one with this issue) server in system.replication_queue there are about 60 GET_PART records that are created on 7 jul 2021 (a...
存在异常 MERGE_PARTS 类型任务，日志中有 "No active replica has part ... or covering part" 报错...
clickhouse-client --query "SELECT replica_path || '/queue/' || node_name FROM system.replication_queue JOIN system.replicas USING (database, table) WHERE create_time < now() - INTERVAL 1 DAY AND type = 'MERGE_PARTS' AND last_exception LIKE '%No active replica has part%'" > clickhous...
xxx (ReplicatedMergeTreePartCheckThread): No replica has part covering 145b0f7c8fc8ab58a80756ca2be99edd_5035_5035_0 and a merge is impossible: we didn't find smaller parts with either the same min block or the same max block. 2024.04.30 21:27:32.896659 [ 192313 ] {} <Error> ztmdb....
每个ClickHouse集群包含1个或多个分片(Shard),每个分片内部包含1个或多个副本(Replica)。 所有ClickHouse节点都部署在Cloud的容器主机中。 ClickHouse特性 ClickHouse是面向联机分析处理的列式数据库,支持SQL查询,且查询性能好,特别是基于大宽表的聚合分析查询性能非常优异,比其他分析型数据库速度快一个数量级。
查询集群中每个节点的 system.replication_queue,存在异常 MERGE_PARTS 类型任务,日志中有 "No active replica has part ... or covering part" 报错信息。 处理办法 问题出现的原因为 Clickhouse V20 有相关 Bug。当一些副本中有 Parts 丢失,此时副本同步队列中有异常任务时则会导致副本之前的同步出现死锁现象,具...
throw Exception("No active replica has part " + entry.new_part_name + " or covering part", ErrorCodes::NO_REPLICA_HAS_PART); } } try { String part_name = entry.actual_new_part_name.empty() ? entry.new_part_name : entry.actual_new_part_name; ...
first_or_random - if first replica one has higher number of errors, pick a random one from replicas with minimum number of errors. --> <load_balancing>random</load_balancing> <constraints><!--配置约束--> <max_memory_usage> <min>5000000000</min> <max>20000000000</max> </max_memory_us...
docker/clickhouse/replica-volume1/configmkdir-p /Users/momo/studySpace/docker/clickhouse/replica-volume2/config# 可先通过单机模式启动容器,然后将容器配置拷贝出来, docker cp 容器id:容器目录 本机目录$ dockercpb723e2da1368:/etc/clickhouse-server /Users/momo/studySpace/docker/clickhouse/replica-volume1/...
replica表示每个shard的副本,默认为1个,可以设置多个,表示该shard有多个副本。正常情况下,每个副本都会存有相同的数据 internal_replication表示副本间是否为内部复制,当通过集群向分片插入数据时会起作用,参数的默认值为false,表示向该分片的所有副本中写入相同的数据(副本间数据一致性不强,无法保证完全同步),true表示只...