942b31038f
When the flush is triggered when the load channel exceeds the mem limit, if the flush fails, an error message is returned and the load is terminated. Usually flush failure is -238 error code. Because the memtable is frequently flushed after the load channel exceeds the mem limit, the number of segments exceeds the max value.
123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "runtime/load_channel.h"
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#include "olap/lru_cache.h"
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#include "runtime/exec_env.h"
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#include "runtime/memory/mem_tracker.h"
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#include "runtime/tablets_channel.h"
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#include "runtime/thread_context.h"
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namespace doris {
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LoadChannel::LoadChannel(const UniqueId& load_id, std::shared_ptr<MemTrackerLimiter>& mem_tracker,
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int64_t timeout_s, bool is_high_priority, const std::string& sender_ip,
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bool is_vec)
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: _load_id(load_id),
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_mem_tracker(mem_tracker),
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_timeout_s(timeout_s),
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_is_high_priority(is_high_priority),
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_sender_ip(sender_ip),
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_is_vec(is_vec) {
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// _last_updated_time should be set before being inserted to
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// _load_channels in load_channel_mgr, or it may be erased
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// immediately by gc thread.
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_last_updated_time.store(time(nullptr));
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}
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LoadChannel::~LoadChannel() {
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LOG(INFO) << "load channel removed. mem peak usage=" << _mem_tracker->peak_consumption()
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<< ", info=" << _mem_tracker->debug_string() << ", load_id=" << _load_id
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<< ", is high priority=" << _is_high_priority << ", sender_ip=" << _sender_ip
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<< ", is_vec=" << _is_vec;
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// Load channel tracker cannot be completely accurate, offsetting the impact on the load channel mgr tracker.
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_mem_tracker->parent()->cache_consume_local(-_mem_tracker->consumption());
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}
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Status LoadChannel::open(const PTabletWriterOpenRequest& params) {
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int64_t index_id = params.index_id();
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std::shared_ptr<TabletsChannel> channel;
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{
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std::lock_guard<std::mutex> l(_lock);
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auto it = _tablets_channels.find(index_id);
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if (it != _tablets_channels.end()) {
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channel = it->second;
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} else {
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// create a new tablets channel
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TabletsChannelKey key(params.id(), index_id);
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channel.reset(new TabletsChannel(key, _mem_tracker, _is_high_priority, _is_vec));
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_tablets_channels.insert({index_id, channel});
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}
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}
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RETURN_IF_ERROR(channel->open(params));
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_opened = true;
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_last_updated_time.store(time(nullptr));
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return Status::OK();
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}
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Status LoadChannel::_get_tablets_channel(std::shared_ptr<TabletsChannel>& channel,
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bool& is_finished, const int64_t index_id) {
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std::lock_guard<std::mutex> l(_lock);
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auto it = _tablets_channels.find(index_id);
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if (it == _tablets_channels.end()) {
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if (_finished_channel_ids.find(index_id) != _finished_channel_ids.end()) {
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// this channel is already finished, just return OK
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is_finished = true;
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return Status::OK();
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}
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std::stringstream ss;
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ss << "load channel " << _load_id << " add batch with unknown index id: " << index_id;
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return Status::InternalError(ss.str());
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}
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is_finished = false;
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channel = it->second;
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return Status::OK();
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}
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// lock should be held when calling this method
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bool LoadChannel::_find_largest_consumption_channel(std::shared_ptr<TabletsChannel>* channel) {
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int64_t max_consume = 0;
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for (auto& it : _tablets_channels) {
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if (it.second->mem_consumption() > max_consume) {
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max_consume = it.second->mem_consumption();
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*channel = it.second;
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}
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}
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return max_consume > 0;
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}
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bool LoadChannel::is_finished() {
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if (!_opened) {
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return false;
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}
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std::lock_guard<std::mutex> l(_lock);
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return _tablets_channels.empty();
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}
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Status LoadChannel::cancel() {
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std::lock_guard<std::mutex> l(_lock);
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for (auto& it : _tablets_channels) {
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it.second->cancel();
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}
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return Status::OK();
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}
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} // namespace doris
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