dc50ce0ce5
Currenlty we make the mutation readers for streaming at different
time point, i.e.,
do_for_each(_ranges.begin(), _ranges.end(), [] (auto range) {
make a mutation reader for this range
read mutations from the reader and send
})
If there are write workload in the background, we will stream extra
data, since the later the reader is made the more data we need to send.
Fix it by making all the readers before starting to stream.
Fixes #1815
Message-Id: <1479341474-1364-2-git-send-email-asias@scylladb.com>
87 lines
2.8 KiB
C++
87 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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* Modified by ScyllaDB
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* Copyright (C) 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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#pragma once
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#include "utils/UUID.hh"
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#include "streaming/stream_task.hh"
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#include "streaming/stream_detail.hh"
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#include "sstables/sstables.hh"
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#include <map>
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#include <seastar/core/semaphore.hh>
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namespace streaming {
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class stream_session;
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class send_info;
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/**
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* StreamTransferTask sends sections of SSTable files in certain ColumnFamily.
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*/
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class stream_transfer_task : public stream_task {
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private:
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int32_t sequence_number = 0;
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bool aborted = false;
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// A stream_transfer_task always contains the same range to stream
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std::vector<nonwrapping_range<dht::token>> _ranges;
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long _total_size;
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std::unordered_multimap<unsigned, foreign_ptr<shared_ptr<send_info>>> _send_infos;
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public:
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using UUID = utils::UUID;
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stream_transfer_task(stream_transfer_task&&) = default;
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stream_transfer_task(shared_ptr<stream_session> session, UUID cf_id, std::vector<nonwrapping_range<dht::token>> ranges, long total_size = 0);
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~stream_transfer_task();
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public:
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virtual void abort() override {
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}
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virtual int get_total_number_of_files() override {
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return 1;
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}
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virtual long get_total_size() override {
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return _total_size;
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}
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void start();
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void append_ranges(const std::vector<nonwrapping_range<dht::token>>& ranges);
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};
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} // namespace streaming
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