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[FEAT MERGE] implement dynamic sampling

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This commit is contained in:
wangt1xiuyi
2023-04-27 12:15:28 +00:00
committed by ob-robot
parent 56f85c9c76
commit f745b47cbc
86 changed files with 6754 additions and 2282 deletions
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39
src/sql/resolver/dml/ob_sql_hint.cpp
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@ -1393,7 +1393,8 @@ int ObStmtHint::merge_hint(ObHint &hint,
if (hint.is_access_path_hint()
|| hint.is_join_hint()
|| hint.is_join_filter_hint()
|| hint.is_table_parallel_hint()) {
|| hint.is_table_parallel_hint()
|| hint.is_table_dynamic_sampling_hint()) {
if (OB_FAIL(add_var_to_array_no_dup(other_opt_hints_, &hint))) {
LOG_WARN("failed to add var to array", K(ret));
}
@ -1509,7 +1510,7 @@ int ObLogPlanHint::init_log_plan_hint(ObSqlSchemaGuard &schema_guard,
stmt_hint.other_opt_hints_))) {
LOG_WARN("failed to init other opt hints", K(ret));
} else {
LOG_TRACE("finish init log plan hint", K(stmt.get_stmt_id()), K(*this));
LOG_TRACE("finish init log plan hint", K(stmt.get_stmt_id()), K(*this), K(stmt_hint.normal_hints_), K(stmt_hint.other_opt_hints_));
}
return ret;
}
@ -1558,6 +1559,11 @@ int ObLogPlanHint::init_other_opt_hints(ObSqlSchemaGuard &schema_guard,
if (OB_FAIL(add_join_hint(stmt, query_hint, *static_cast<const ObJoinHint*>(hint)))) {
LOG_WARN("failed to add join hint", K(ret));
}
} else if (hint->is_table_dynamic_sampling_hint()) {
if (OB_FAIL(add_table_dynamic_sampling_hint(stmt, query_hint,
*static_cast<const ObTableDynamicSamplingHint*>(hint)))) {
LOG_WARN("failed to add dynamic sampling hint", K(ret));
}
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected hint type in other_opt_hints_", K(ret), K(*hint));
@ -1576,6 +1582,7 @@ int ObLogPlanHint::init_other_opt_hints(ObSqlSchemaGuard &schema_guard,
// 1. index hints;
// 2. imc hints;
// 3. table parallel hints;
// 4. dynamic sampling hint;
int ObLogPlanHint::init_log_table_hints(ObSqlSchemaGuard &schema_guard)
{
int ret = OB_SUCCESS;
@ -1636,6 +1643,28 @@ int ObLogPlanHint::add_table_parallel_hint(const ObDMLStmt &stmt,
return ret;
}
int ObLogPlanHint::add_table_dynamic_sampling_hint(const ObDMLStmt &stmt,
const ObQueryHint &query_hint,
const ObTableDynamicSamplingHint &table_ds_hint)
{
int ret = OB_SUCCESS;
LogTableHint *log_table_hint = NULL;
if (OB_FAIL(get_log_table_hint_for_update(stmt, query_hint, table_ds_hint.get_table(),
true, log_table_hint))) {
LOG_WARN("failed to get log table hint by hint", K(ret));
} else if (NULL == log_table_hint) {
/* do nothing */
} else if (NULL == log_table_hint->dynamic_sampling_hint_ && !log_table_hint->is_ds_hint_conflict_) {
log_table_hint->dynamic_sampling_hint_ = &table_ds_hint;
} else if (log_table_hint->dynamic_sampling_hint_->get_dynamic_sampling() != table_ds_hint.get_dynamic_sampling() ||
log_table_hint->dynamic_sampling_hint_->get_sample_block_cnt() != table_ds_hint.get_sample_block_cnt()) {
//conflict will cause reset origin state compatible Oracle.
log_table_hint->dynamic_sampling_hint_ = NULL;
log_table_hint->is_ds_hint_conflict_ = true;
}
return ret;
}
int ObLogPlanHint::add_join_filter_hint(const ObDMLStmt &stmt,
const ObQueryHint &query_hint,
const ObJoinFilterHint &join_filter_hint)
@ -1857,6 +1886,12 @@ int ObLogPlanHint::check_use_skip_scan(uint64_t table_id,
return ret;
}
const ObTableDynamicSamplingHint *ObLogPlanHint::get_dynamic_sampling_hint(uint64_t table_id) const
{
const LogTableHint *log_table_hint = get_log_table_hint(table_id);
return NULL == log_table_hint ? NULL : log_table_hint->dynamic_sampling_hint_;
}
int ObLogPlanHint::check_use_join_filter(uint64_t filter_table_id,
const ObRelIds &left_tables,
bool part_join_filter,