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70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
#include <Interpreters/ClusterProxy/executeQuery.h>
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#include <Interpreters/ClusterProxy/IStreamFactory.h>
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#include <Interpreters/Settings.h>
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#include <Interpreters/Context.h>
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#include <Interpreters/Cluster.h>
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#include <Interpreters/IInterpreter.h>
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#include <Parsers/queryToString.h>
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#include <Interpreters/ProcessList.h>
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namespace DB
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{
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namespace ClusterProxy
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{
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BlockInputStreams executeQuery(
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IStreamFactory & stream_factory, const ClusterPtr & cluster,
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const ASTPtr & query_ast, const Context & context, const Settings & settings)
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{
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BlockInputStreams res;
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const std::string query = queryToString(query_ast);
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Settings new_settings = settings;
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new_settings.queue_max_wait_ms = Cluster::saturate(new_settings.queue_max_wait_ms, settings.limits.max_execution_time);
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/// Does not matter on remote servers, because queries are sent under different user.
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new_settings.max_concurrent_queries_for_user = 0;
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new_settings.limits.max_memory_usage_for_user = 0;
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/// This setting is really not for user and should not be sent to remote server.
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new_settings.limits.max_memory_usage_for_all_queries = 0;
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/// Set as unchanged to avoid sending to remote server.
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new_settings.max_concurrent_queries_for_user.changed = false;
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new_settings.limits.max_memory_usage_for_user.changed = false;
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new_settings.limits.max_memory_usage_for_all_queries.changed = false;
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Context new_context(context);
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new_context.setSettings(new_settings);
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ThrottlerPtr user_level_throttler;
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if (settings.limits.max_network_bandwidth_for_user)
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if (auto process_list_element = context.getProcessListElement())
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if (auto user_process_list = process_list_element->user_process_list)
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user_level_throttler = user_process_list->user_throttler;
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/// Network bandwidth limit, if needed.
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ThrottlerPtr throttler;
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if (settings.limits.max_network_bandwidth || settings.limits.max_network_bytes)
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{
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throttler = std::make_shared<Throttler>(
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settings.limits.max_network_bandwidth,
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settings.limits.max_network_bytes,
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"Limit for bytes to send or receive over network exceeded.",
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user_level_throttler);
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}
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else if (settings.limits.max_network_bandwidth_for_user)
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throttler = user_level_throttler;
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for (const auto & shard_info : cluster->getShardsInfo())
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stream_factory.createForShard(shard_info, query, query_ast, new_context, throttler, res);
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return res;
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}
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}
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}
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