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This commit is contained in:
amudong 2020-06-23 12:24:05 +08:00
parent 0101947403
commit cca8df6b78
1 changed files with 6 additions and 6 deletions
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12
src/Storages/StorageReplicatedMergeTree.cpp
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@ -782,12 +782,12 @@ void StorageReplicatedMergeTree::dropReplica(zkutil::ZooKeeperPtr zookeeper, con
LOG_INFO(log, "{} is the last replica, will remove table", remote_replica_path);
/** At this moment, another replica can be created and we cannot remove the table.
* Try to remove /replicas node first. If we successfully removed it,
* it guarantees that we are the only replica that proceed to remove the table
* and no new replicas can be created after that moment (it requires the existence of /replicas node).
* and table cannot be recreated with new /replicas node on another servers while we are removing data,
* because table creation is executed in single transaction that will conflict with remaining nodes.
*/
* Try to remove /replicas node first. If we successfully removed it,
* it guarantees that we are the only replica that proceed to remove the table
* and no new replicas can be created after that moment (it requires the existence of /replicas node).
* and table cannot be recreated with new /replicas node on another servers while we are removing data,
* because table creation is executed in single transaction that will conflict with remaining nodes.
*/
Coordination::Requests ops;
Coordination::Responses responses;