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Consider task count for ddl delay scheduling

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Hongqin-Li 2022-12-28 13:38:07 +00:00 committed by ob-robot
parent 02fedb0783
commit 6e762be4fb
4 changed files with 8 additions and 5 deletions
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2
src/rootserver/ddl_task/ob_ddl_scheduler.cpp
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@ -337,7 +337,7 @@ void ObDDLScheduler::run1()
} else {
ObCurTraceId::set(task->get_trace_id());
int task_ret = task->process();
task->calc_next_schedule_ts(task_ret);
task->calc_next_schedule_ts(task_ret, task_queue_.get_task_cnt());
if (task->need_retry() && !has_set_stop()) {
if (OB_FAIL(task_queue_.add_task_to_last(task))) {
STORAGE_LOG(ERROR, "fail to add task to last, which should not happen", K(ret), K(*task));

1
src/rootserver/ddl_task/ob_ddl_scheduler.h
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@ -61,6 +61,7 @@ public:
int add_task_to_last(ObDDLTask *task);
int get_task(const ObDDLTaskKey &task_key, ObDDLTask *&task);
int get_task(const int64_t task_id, ObDDLTask *&task);
int64_t get_task_cnt() const { return task_list_.get_size(); }
void destroy();
private:
typedef common::ObDList<ObDDLTask> TaskList;

8
src/rootserver/ddl_task/ob_ddl_task.cpp
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@ -623,13 +623,15 @@ int ObDDLTask::push_execution_id()
return ret;
}
void ObDDLTask::calc_next_schedule_ts(int ret_code)
// The length of [min_dt, max_dt] controls the execution rate of ddl tasks.
void ObDDLTask::calc_next_schedule_ts(const int ret_code, const int64_t total_task_cnt)
{
if (OB_TIMEOUT == ret_code) {
const int64_t SEC = 1000000;
delay_schedule_time_ = std::min(delay_schedule_time_ * 6/5 + SEC/10, 30*SEC);
const int64_t max_delay = total_task_cnt * ObDDLUtil::get_ddl_rpc_timeout() * 10;
delay_schedule_time_ = std::min(delay_schedule_time_ * 6/5 + SEC/10, max_delay);
const int64_t max_dt = delay_schedule_time_;
const int64_t min_dt = std::max(0L, max_dt - 3*SEC);
const int64_t min_dt = max_dt / 2;
next_schedule_ts_ = ObTimeUtility::current_time() + ObRandom::rand(min_dt, max_dt);
} else {
delay_schedule_time_ = 0;

2
src/rootserver/ddl_task/ob_ddl_task.h
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@ -323,7 +323,7 @@ public:
void set_sys_task_id(const TraceId &sys_task_id) { sys_task_id_ = sys_task_id; }
void set_sql_exec_addr(const common::ObAddr &addr) { sql_exec_addr_ = addr; }
const TraceId &get_sys_task_id() const { return sys_task_id_; }
void calc_next_schedule_ts(int ret_code);
void calc_next_schedule_ts(const int ret_code, const int64_t total_task_cnt);
bool need_schedule() { return next_schedule_ts_ <= ObTimeUtility::current_time(); }
bool is_replica_build_need_retry(const int ret_code);
int push_execution_id();