116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX STORAGE
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#include "ob_sstable_garbage_collector.h"
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#include "storage/ob_partition_service.h"
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#include "share/ob_force_print_log.h"
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#include "storage/ob_pg_storage.h"
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#include "storage/ob_partition_scheduler.h"
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namespace oceanbase {
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using namespace common;
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using namespace transaction;
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namespace storage {
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ObSSTableGarbageCollector::ObSSTableGarbageCollector() : trans_service_(nullptr), is_inited_(false)
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{}
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ObSSTableGarbageCollector::~ObSSTableGarbageCollector()
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{
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destroy();
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}
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void ObSSTableGarbageCollector::destroy()
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{
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if (is_inited_) {
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stop();
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wait();
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trans_service_ = nullptr;
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is_inited_ = false;
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}
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}
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int ObSSTableGarbageCollector::init(ObTransService* trans_service)
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{
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int ret = OB_SUCCESS;
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if (OB_ISNULL(trans_service)) {
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ret = OB_NOT_INIT;
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LOG_WARN("invalid argument", K(ret), KP(trans_service));
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} else {
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trans_service_ = trans_service;
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is_inited_ = true;
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}
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return ret;
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}
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int ObSSTableGarbageCollector::start()
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{
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int ret = OB_SUCCESS;
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if (IS_NOT_INIT) {
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ret = OB_NOT_INIT;
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LOG_WARN("ObSSTableGarbageCollector is not inited", K(ret));
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} else if (OB_FAIL(lib::ThreadPool::start())) {
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LOG_WARN("failed to start thread", K(ret));
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} else {
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LOG_INFO("ObSSTableGarbageCollector starts to run");
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}
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return ret;
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}
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void ObSSTableGarbageCollector::run1()
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{
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lib::set_thread_name("ObSSTableGC");
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while (!has_set_stop()) {
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int ret = OB_SUCCESS;
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const int64_t start_ts = ObTimeUtility::current_time();
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ObIPartitionGroupIterator* pg_iter = nullptr;
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const int64_t frozen_version = ObPartitionScheduler::get_instance().get_frozen_version();
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if (OB_ISNULL(pg_iter = ObPartitionService::get_instance().alloc_pg_iter())) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_WARN("failed to alloc_pg_iter", K(ret));
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} else {
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while (OB_SUCC(ret)) {
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ObIPartitionGroup* pg = nullptr;
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if (OB_FAIL(pg_iter->get_next(pg))) {
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if (OB_ITER_END != ret) {
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LOG_WARN("failed to get next partition", K(ret));
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}
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} else if (OB_ISNULL(pg)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("pg should not be null", K(ret));
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} else if (OB_FAIL(pg->get_pg_storage().update_upper_trans_version_and_gc_sstable(
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*trans_service_, frozen_version))) {
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LOG_WARN("failed to gc_pg_sstables_", K(ret), "pg_key", pg->get_partition_key());
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// reset ret code, continue processing next partition
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ret = OB_SUCCESS;
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}
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}
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}
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if (nullptr != pg_iter) {
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ObPartitionService::get_instance().revert_pg_iter(pg_iter);
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pg_iter = nullptr;
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}
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const int64_t cost_ts = ObTimeUtility::current_time() - start_ts;
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if (cost_ts < SSTABLE_GC_INTERVAL) {
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usleep(SSTABLE_GC_INTERVAL - cost_ts);
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}
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if (TC_REACH_COUNT_INTERVAL(5)) {
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FLOG_INFO("sstable garbage collector is running", K(cost_ts));
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}
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}
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}
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} // namespace storage
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} // namespace oceanbase
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