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[FEAT MERGE]adaptive cost model

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This commit is contained in:
zzg19950727
2023-12-06 03:12:01 +00:00
committed by ob-robot
parent 6520c7b570
commit d70d986be9
85 changed files with 21899 additions and 18832 deletions
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49
src/sql/optimizer/ob_optimizer.cpp
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@ -26,6 +26,10 @@
#include "sql/dblink/ob_dblink_utils.h"
#include "sql/resolver/dml/ob_merge_stmt.h"
#include "sql/optimizer/ob_log_temp_table_insert.h"
#include "share/stat/ob_opt_system_stat.h"
#include "sql/optimizer/ob_opt_cost_model_parameter.h"
#include "src/share/stat/ob_opt_stat_manager.h"
using namespace oceanbase;
using namespace sql;
using namespace oceanbase::common;
@ -557,6 +561,8 @@ int ObOptimizer::extract_opt_ctx_basic_flags(const ObDMLStmt &stmt, ObSQLSession
LOG_WARN("fail to get force_serial_set_order", K(ret));
} else if (OB_FAIL(check_force_default_stat())) {
LOG_WARN("failed to check force default stat", K(ret));
} else if (OB_FAIL(init_system_stat())) {
LOG_WARN("failed to init system stat", K(ret));
} else if (OB_FAIL(calc_link_stmt_count(stmt, link_stmt_count))) {
LOG_WARN("calc link stmt count failed", K(ret));
} else if (OB_FAIL(ObDblinkUtils::has_reverse_link_or_any_dblink(&stmt, has_dblink, true))) {
@ -1030,6 +1036,49 @@ int ObOptimizer::check_force_default_stat()
return ret;
}
int ObOptimizer::init_system_stat()
{
int ret = OB_SUCCESS;
bool is_valid = false;
OptSystemStat &meta = ctx_.get_system_stat();
ObOptStatManager *opt_stat_manager = ctx_.get_opt_stat_manager();
ObSQLSessionInfo* session = ctx_.get_session_info();
if (OB_ISNULL(opt_stat_manager) || OB_ISNULL(session)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected null param", K(ret));
} else if (OB_FAIL(opt_stat_manager->check_system_stat_validity(ctx_.get_exec_ctx(),
session->get_effective_tenant_id(),
is_valid))) {
LOG_WARN("failed to check system stat is valid", K(ret));
} else if (!ctx_.use_default_stat() && is_valid) {
ObOptSystemStat stat;
if (OB_FAIL(opt_stat_manager->get_system_stat(session->get_effective_tenant_id(), stat))) {
LOG_WARN("failed to get system stat", K(ret));
} else {
meta.set_cpu_speed(stat.get_cpu_speed());
meta.set_disk_seq_read_speed(stat.get_disk_seq_read_speed());
meta.set_disk_rnd_read_speed(stat.get_disk_rnd_read_speed());
meta.set_network_speed(stat.get_network_speed());
}
}
if (OB_SUCC(ret)) {
//refine default stat
if (meta.get_cpu_speed() <= 0) {
meta.set_cpu_speed(DEFAULT_CPU_SPEED);
}
if (meta.get_disk_seq_read_speed() <= 0) {
meta.set_disk_seq_read_speed(DEFAULT_DISK_SEQ_READ_SPEED);
}
if (meta.get_disk_rnd_read_speed() <= 0) {
meta.set_disk_rnd_read_speed(DEFAULT_DISK_RND_READ_SPEED);
}
if (meta.get_network_speed() <= 0) {
meta.set_network_speed(DEFAULT_NETWORK_SPEED);
}
}
return ret;
}
int ObOptimizer::check_merge_stmt_is_update_index_rowkey(const ObSQLSessionInfo &session,
const ObDMLStmt &stmt,
const ObIArray<uint64_t> &index_ids,