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[FEAT MERGE]: online optimizer stats gather.

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Co-authored-by: obdev <obdev@oceanbase.com>
This commit is contained in:
Monk-Liu
2023-01-28 13:54:38 +08:00
committed by ob-robot
parent 735401c8d7
commit 9484175163
74 changed files with 3416 additions and 85 deletions
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38
src/sql/resolver/dml/ob_hint.h
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@ -61,6 +61,21 @@ struct ObDopHint
TO_STRING_KV(K_(dfo), K_(dop));
};
// hint relate to optimizer statistics gathering.
struct ObOptimizerStatisticsGatheringHint
{
ObOptimizerStatisticsGatheringHint(): flags_(0) {};
~ObOptimizerStatisticsGatheringHint() = default;
static const int8_t OB_APPEND_HINT = 0x1 << 1;
static const int8_t OB_OPT_STATS_GATHER = 0x1 << 2; // OPTIMIZER_STATISTICS_GATHERING
static const int8_t OB_NO_OPT_STATS_GATHER = 0x1 << 3; // NO_OPTIMIZER_STATISTICS_GATHERING
uint64_t flags_;
TO_STRING_KV(K_(flags));
int print_osg_hint(planText &plan_text) const;
};
struct ObOptParamHint
{
ObOptParamHint() {};
@ -123,6 +138,7 @@ struct ObGlobalHint {
void merge_log_level_hint(const ObString &log_level);
void merge_read_consistency_hint(ObConsistencyLevel read_consistency, int64_t frozen_version);
void merge_opt_features_version_hint(uint64_t opt_features_version);
void merge_osg_hint(int8_t flag);
bool has_hint_exclude_concurrent() const;
int print_global_hint(planText &plan_text) const;
@ -139,6 +155,24 @@ struct ObGlobalHint {
bool disable_query_transform() const { return disable_transform_; }
bool disable_cost_based_transform() const { return disable_cost_based_transform_; }
// wether should generate optimizer_statistics_operator.
bool should_generate_osg_operator () const {
// TODO parallel hint.
return (osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_NO_OPT_STATS_GATHER)
? false
: (((osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_APPEND_HINT)
|| (osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_OPT_STATS_GATHER)) ?
true : false);
};
bool has_no_gather_opt_stat_hint() const {
return (osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_NO_OPT_STATS_GATHER) ? true : false;
}
bool has_gather_opt_stat_hint() const {
return (osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_OPT_STATS_GATHER) ? true : false;
}
TO_STRING_KV(K_(frozen_version),
K_(topk_precision),
K_(sharding_minimum_row_count),
@ -160,7 +194,8 @@ struct ObGlobalHint {
K_(disable_transform),
K_(disable_cost_based_transform),
K_(opt_params),
K_(ob_ddl_schema_versions));
K_(ob_ddl_schema_versions),
K_(osg_hint));
int64_t frozen_version_;
int64_t topk_precision_;
int64_t sharding_minimum_row_count_;
@ -183,6 +218,7 @@ struct ObGlobalHint {
bool disable_cost_based_transform_;
ObOptParamHint opt_params_;
common::ObSArray<ObDDLSchemaVersionHint> ob_ddl_schema_versions_;
ObOptimizerStatisticsGatheringHint osg_hint_;
};
// used in physical plan