distributed_cache_alignment
Only has an effect in ClickHouse Cloud. A setting for testing purposes, do not change itdistributed_cache_bypass_connection_pool
Only has an effect in ClickHouse Cloud. Allow to bypass distributed cache connection pooldistributed_cache_client_id
Only has an effect in ClickHouse Cloud. A setting used only for CI tests - overrides the registry-configured distributed cache client id for this query’s requests when non-empty. Lets tests spread data across a bounded set of client ids while keeping the same data on the same client id. It requiresci_mode to be enabled in the distributed cache client config: when it is not (the default, as in production), a query that routes a read or write through the distributed cache fails with SUPPORT_IS_DISABLED instead of silently falling back to the configured client id. Queries that never reach the distributed cache are unaffected, so the value is ignored there.
distributed_cache_connect_backoff_max_ms
Only has an effect in ClickHouse Cloud. Maximum backoff milliseconds for distributed cache connection creation.distributed_cache_connect_backoff_min_ms
Only has an effect in ClickHouse Cloud. Minimum backoff milliseconds for distributed cache connection creation.distributed_cache_connect_max_tries
Only has an effect in ClickHouse Cloud. Number of tries to connect to distributed cache if unsuccessfuldistributed_cache_connect_timeout_ms
Only has an effect in ClickHouse Cloud. Connection timeout when connecting to distributed cache server.distributed_cache_credentials_refresh_period_seconds
Only has an effect in ClickHouse Cloud. A period of credentials refresh.distributed_cache_data_packet_ack_window
Only has an effect in ClickHouse Cloud. A window for sending ACK for DataPacket sequence in a single distributed cache read requestdistributed_cache_discard_connection_if_unread_data
Only has an effect in ClickHouse Cloud. Discard connection if some data is unread.distributed_cache_fetch_metrics_only_from_current_az
Only has an effect in ClickHouse Cloud. Fetch metrics only from current availability zone in system.distributed_cache_metrics, system.distributed_cache_eventsdistributed_cache_file_cache_name
Only has an effect in ClickHouse Cloud. A setting used only for CI tests - filesystem cache name to use on distributed cache.distributed_cache_log_mode
Only has an effect in ClickHouse Cloud. Mode for writing to system.distributed_cache_logdistributed_cache_max_unacked_inflight_packets
Only has an effect in ClickHouse Cloud. A maximum number of unacknowledged in-flight packets in a single distributed cache read requestdistributed_cache_min_bytes_for_seek
Only has an effect in ClickHouse Cloud. Minimum number of bytes to do seek in distributed cache.distributed_cache_min_inflight_bytes_to_discard_connection_on_seek
Only has an effect in ClickHouse Cloud. On a seek away from the current position of an open distributed cache stream, if the estimated number of in-flight bytes that would have to be discarded to keep reusing the connection (via the read range id mechanism) exceeds this value, drop the connection and open a new one instead. This avoids draining a large amount of unused data when seeks are frequent. 0 disables this and always reuses the connection.distributed_cache_pool_behaviour_on_limit
Only has an effect in ClickHouse Cloud. Identifies behaviour of distributed cache connection on pool limit reacheddistributed_cache_prefer_bigger_buffer_size
Only has an effect in ClickHouse Cloud. Same as filesystem_cache_prefer_bigger_buffer_size, but for distributed cache.distributed_cache_read_only_from_current_az
Only has an effect in ClickHouse Cloud. Allow to read only from current availability zone. If disabled, will read from all cache servers in all availability zones.distributed_cache_read_request_max_tries
Only has an effect in ClickHouse Cloud. Number of tries to do distributed cache read request if unsuccessfuldistributed_cache_receive_response_wait_milliseconds
Only has an effect in ClickHouse Cloud. Wait time in milliseconds to receive data for request from distributed cachedistributed_cache_receive_timeout_milliseconds
Only has an effect in ClickHouse Cloud. Wait time in milliseconds to receive any kind of response from distributed cache Cloud default value:20000.
distributed_cache_receive_timeout_ms
Only has an effect in ClickHouse Cloud. Timeout for receiving data from distributed cache server, in milliseconds. If no bytes were received in this interval, the exception is thrown.distributed_cache_registry_show_certificate_and_signature
Only has an effect in ClickHouse Cloud. Show thecertificate and signature columns in the system.distributed_cache_registry table. By default these columns are empty to keep the output compact; enable this setting to inspect them.