06e1facc34
The map_reduce0 convert the result value to the init value type. In load_bradcaster 0 is of type int. This result with an int wrap around and negative results. Signed-off-by: Amnon Heiman <amnon@scylladb.com>
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Modified by ScyllaDB
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* Copyright 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "load_broadcaster.hh"
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namespace service {
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constexpr std::chrono::milliseconds load_broadcaster::BROADCAST_INTERVAL;
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logging::logger logger("load_broadcaster");
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void load_broadcaster::start_broadcasting() {
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_done = make_ready_future<>();
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// send the first broadcast "right away" (i.e., in 2 gossip heartbeats, when we should have someone to talk to);
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// after that send every BROADCAST_INTERVAL.
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_timer.set_callback([this] {
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logger.debug("Disseminating load info ...");
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_done = _db.map_reduce0([](database& db) {
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int64_t res = 0;
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for (auto i : db.get_column_families()) {
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res += i.second->get_stats().live_disk_space_used;
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}
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return res;
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}, int64_t(0), std::plus<int64_t>()).then([this] (int64_t size) {
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gms::versioned_value::factory value_factory;
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return _gossiper.add_local_application_state(gms::application_state::LOAD,
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value_factory.load(size)).then([this] {
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_timer.arm(BROADCAST_INTERVAL);
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return make_ready_future<>();
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});
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});
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});
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_timer.arm(2 * gms::gossiper::INTERVAL);
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}
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future<> load_broadcaster::stop_broadcasting() {
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_timer.cancel();
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return std::move(_done);
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}
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}
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