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These settings are available in system.merge_tree_settings and are autogenerated from ClickHouse source.

max_replicated_fetches_network_bandwidth

Limits the maximum speed of data exchange over the network in bytes per second for replicated fetches. This setting is applied to a particular table, unlike the max_replicated_fetches_network_bandwidth_for_server setting, which is applied to the server. You can limit both server network and network for a particular table, but for this the value of the table-level setting should be less than server-level one. Otherwise the server considers only the max_replicated_fetches_network_bandwidth_for_server setting. The setting isn’t followed perfectly accurately. Possible values:
  • Positive integer.
  • 0 — Unlimited.
Default value: 0. Usage Could be used for throttling speed when replicating data to add or replace new nodes.

max_replicated_logs_to_keep

How many records may be in the ClickHouse Keeper log if there is inactive replica. An inactive replica becomes lost when when this number exceed. Possible values:
  • Any positive integer.

max_replicated_merges_in_queue

How many tasks of merging and mutating parts are allowed simultaneously in ReplicatedMergeTree queue.

max_replicated_merges_with_ttl_in_queue

How many tasks of merging parts with TTL are allowed simultaneously in ReplicatedMergeTree queue.

max_replicated_mutations_in_queue

How many tasks of mutating parts are allowed simultaneously in ReplicatedMergeTree queue.

max_replicated_sends_network_bandwidth

Limits the maximum speed of data exchange over the network in bytes per second for replicated sends. This setting is applied to a particular table, unlike the max_replicated_sends_network_bandwidth_for_server setting, which is applied to the server. You can limit both server network and network for a particular table, but for this the value of the table-level setting should be less than server-level one. Otherwise the server considers only the max_replicated_sends_network_bandwidth_for_server setting. The setting isn’t followed perfectly accurately. Possible values:
  • Positive integer.
  • 0 — Unlimited.
Usage Could be used for throttling speed when replicating data to add or replace new nodes.
Last modified on July 23, 2026