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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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40
src/sql/resolver/dml/ob_hint.h
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@ -89,6 +89,8 @@ struct ObOptParamHint
DEF(DDL_TASK_ID,) \
DEF(ENABLE_NEWSORT,) \
DEF(USE_PART_SORT_MGB,) \
DEF(USE_DEFAULT_OPT_STAT,) \
DEF(USE_FORCE_BLOCK_SAMPLE,) \
DECLARE_ENUM(OptParamType, opt_param, OPT_PARAM_TYPE_DEF, static);
@ -127,6 +129,7 @@ struct ObGlobalHint {
static const uint64_t MIN_OUTLINE_ENABLE_VERSION = CLUSTER_VERSION_4_0_0_0;
static const uint64_t CURRENT_OUTLINE_ENABLE_VERSION = CLUSTER_VERSION_4_0_0_0;
static const int64_t DEFAULT_PARALLEL = 1;
static const int64_t UNSET_DYNAMIC_SAMPLING = -1;
int merge_global_hint(const ObGlobalHint &other);
int merge_monitor_hints(const ObIArray<ObMonitorHint> &monitoring_ids);
@ -146,6 +149,7 @@ struct ObGlobalHint {
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);
void merge_dynamic_sampling_hint(int64_t dynamic_sampling);
bool has_hint_exclude_concurrent() const;
int print_global_hint(PlanText &plan_text, const bool ignore_parallel) const;
@ -193,6 +197,8 @@ struct ObGlobalHint {
bool has_gather_opt_stat_hint() const {
return (osg_hint_.flags_ & ObOptimizerStatisticsGatheringHint::OB_OPT_STATS_GATHER) ? true : false;
}
int64_t get_dynamic_sampling() const { return dynamic_sampling_; }
bool has_dynamic_sampling() const { return UNSET_DYNAMIC_SAMPLING != dynamic_sampling_; }
TO_STRING_KV(K_(frozen_version),
K_(topk_precision),
@ -220,7 +226,9 @@ struct ObGlobalHint {
K_(opt_params),
K_(ob_ddl_schema_versions),
K_(osg_hint),
K_(has_dbms_stats_hint));
K_(has_dbms_stats_hint),
K_(dynamic_sampling));
int64_t frozen_version_;
int64_t topk_precision_;
int64_t sharding_minimum_row_count_;
@ -248,6 +256,7 @@ struct ObGlobalHint {
common::ObSArray<ObDDLSchemaVersionHint> ob_ddl_schema_versions_;
ObOptimizerStatisticsGatheringHint osg_hint_;
bool has_dbms_stats_hint_;
int64_t dynamic_sampling_;
};
// used in physical plan
@ -369,7 +378,8 @@ public:
HINT_JOIN_METHOD,
HINT_TABLE_PARALLEL,
HINT_PQ_SET,
HINT_JOIN_FILTER
HINT_JOIN_FILTER,
HINT_TABLE_DYNAMIC_SAMPLING
};
static const int64_t MAX_EXPR_STR_LENGTH_IN_HINT = 1024;
@ -432,6 +442,7 @@ public:
bool is_table_parallel_hint() const { return HINT_TABLE_PARALLEL == hint_class_; }
bool is_join_filter_hint() const { return HINT_JOIN_FILTER == hint_class_; }
bool is_project_prune_hint() const { return T_PROJECT_PRUNE == hint_type_; }
bool is_table_dynamic_sampling_hint() const { return HINT_TABLE_DYNAMIC_SAMPLING == hint_class_; }
VIRTUAL_TO_STRING_KV("hint_type", get_type_name(hint_type_),
K_(hint_class), K_(qb_name),
@ -969,6 +980,31 @@ struct ObDDLSchemaVersionHint
ObTableInHint table_;
int64_t schema_version_;
};
class ObTableDynamicSamplingHint : public ObOptHint
{
public:
ObTableDynamicSamplingHint(ObItemType hint_type)
: ObOptHint(hint_type), dynamic_sampling_(ObGlobalHint::UNSET_DYNAMIC_SAMPLING), sample_block_cnt_(0)
{
set_hint_class(HINT_TABLE_DYNAMIC_SAMPLING);
}
int assign(const ObTableDynamicSamplingHint &other);
virtual ~ObTableDynamicSamplingHint() {}
virtual int get_all_table_in_hint(ObIArray<ObTableInHint*> &all_tables) override { return all_tables.push_back(&table_); }
virtual int print_hint_desc(PlanText &plan_text) const override;
ObTableInHint &get_table() { return table_; }
const ObTableInHint &get_table() const { return table_; }
int64_t get_dynamic_sampling() const { return dynamic_sampling_; }
void set_dynamic_sampling(int64_t dynamic_sampling) { dynamic_sampling_ = dynamic_sampling; }
int64_t get_sample_block_cnt() const { return sample_block_cnt_; }
void set_sample_block_cnt(int64_t sample_block_cnt) { sample_block_cnt_ = sample_block_cnt; }
INHERIT_TO_STRING_KV("ObHint", ObHint, K_(table), K_(dynamic_sampling), K_(sample_block_cnt));
private:
ObTableInHint table_;
int64_t dynamic_sampling_;
int64_t sample_block_cnt_;
};
}
}