ClickHouse

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#include "ServerSettings.h"
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#include <Poco/Util/AbstractConfiguration.h>
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namespace DB
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{
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IMPLEMENT_SETTINGS_TRAITS(ServerSettingsTraits, SERVER_SETTINGS)
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void ServerSettings::loadSettingsFromConfig(const Poco::Util::AbstractConfiguration & config)
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{
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    // settings which can be loaded from the the default profile, see also MAKE_DEPRECATED_BY_SERVER_CONFIG in src/Core/Settings.h
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    std::unordered_set<std::string> settings_from_profile_allowlist = {
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        "background_pool_size",
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        "background_merges_mutations_concurrency_ratio",
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        "background_merges_mutations_scheduling_policy",
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        "background_move_pool_size",
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        "background_fetches_pool_size",
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        "background_common_pool_size",
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        "background_buffer_flush_schedule_pool_size",
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        "background_schedule_pool_size",
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        "background_message_broker_schedule_pool_size",
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        "background_distributed_schedule_pool_size",
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        "max_remote_read_network_bandwidth_for_server",
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        "max_remote_write_network_bandwidth_for_server",
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    };
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    for (const auto & setting : all())
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    {
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        const auto & name = setting.getName();
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        if (config.has(name))
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            set(name, config.getString(name));
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        else if (settings_from_profile_allowlist.contains(name) && config.has("profiles.default." + name))
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            set(name, config.getString("profiles.default." + name));
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    }
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}
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}
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