31d439213c
Currently, only the shard where the stream_plan is created on will send streaing mutations. To utilize all the available cores, we can make each shard send mutations which it is responsbile for. On the receiver side, we do not forward the mutations to the shard where the stream_session is created, so that we can avoid unnecessary forwarding. Note: the downside is that it is now harder to: 1) to track number of bytes sent and received 2) to update the keep alive timer upon receive of the STREAM_MUTATION To fix, we now store the sent/recieved bytes info on all shards. When the keep alive timer expires, we check if any progress has been made. Hopefully, this patch will make the streaming much faster and in turn make the repair/decommission/adding a node faster. Refs: https://github.com/scylladb/scylla/issues/849 Tested with decommission/repair dtest. Message-Id: <96b419ab11b736a297edd54a0b455ffdc2511ac5.1454645370.git.asias@scylladb.com>
83 lines
2.6 KiB
C++
83 lines
2.6 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 Cloudius Systems.
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* Copyright 2015 Cloudius Systems.
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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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/**
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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<range<dht::token>> _ranges;
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long _total_size;
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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<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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};
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} // namespace streaming
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