variable: disable tidb_read_staleness for SET_VAR hint (#48477)
close pingcap/tidb#48478
This commit is contained in:
Yiding Cui
@ -31,78 +31,79 @@ var isHintUpdatableVerified = map[string]struct{}{
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"tidb_enable_outer_join_reorder": {},
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"tidb_enable_null_aware_anti_join": {},
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"tidb_replica_read": {},
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"tidb_read_staleness": {},
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"tidb_enable_paging": {},
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"tidb_read_consistency": {},
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"tidb_distsql_scan_concurrency": {},
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"tidb_opt_insubq_to_join_and_agg": {},
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"tidb_opt_prefer_range_scan": {},
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"tidb_opt_enable_correlation_adjustment": {},
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"tidb_opt_limit_push_down_threshold": {},
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"tidb_opt_correlation_threshold": {},
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"tidb_opt_correlation_exp_factor": {},
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"tidb_opt_cpu_factor": {},
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"tidb_opt_copcpu_factor": {},
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"tidb_opt_tiflash_concurrency_factor": {},
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"tidb_opt_network_factor": {},
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"tidb_opt_scan_factor": {},
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"tidb_opt_desc_factor": {},
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"tidb_opt_seek_factor": {},
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"tidb_opt_memory_factor": {},
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"tidb_opt_disk_factor": {},
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"tidb_opt_concurrency_factor": {},
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"tidb_opt_force_inline_cte": {},
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"tidb_index_join_batch_size": {},
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"tidb_index_lookup_size": {},
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"tidb_index_serial_scan_concurrency": {},
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"tidb_allow_batch_cop": {},
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"tidb_allow_mpp": {},
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"tidb_enforce_mpp": {},
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"tidb_max_bytes_before_tiflash_external_join": {},
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"tidb_max_bytes_before_tiflash_external_group_by": {},
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"tidb_max_bytes_before_tiflash_external_sort": {},
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"tidb_min_paging_size": {},
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"tidb_max_paging_size": {},
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"tidb_enable_cascades_planner": {},
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"tidb_merge_join_concurrency": {},
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"tidb_index_merge_intersection_concurrency": {},
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"tidb_opt_projection_push_down": {},
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"tidb_enable_vectorized_expression": {},
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"tidb_opt_join_reorder_threshold": {},
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"tidb_enable_index_merge": {},
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"tidb_enable_extended_stats": {},
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"tidb_isolation_read_engines": {},
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"tidb_executor_concurrency": {},
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"tidb_partition_prune_mode": {},
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"tidb_enable_index_merge_join": {},
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"tidb_enable_ordered_result_mode": {},
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"tidb_enable_pseudo_for_outdated_stats": {},
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"tidb_stats_load_sync_wait": {},
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"tidb_cost_model_version": {},
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"tidb_index_join_double_read_penalty_cost_rate": {},
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"tidb_default_string_match_selectivity": {},
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"tidb_enable_prepared_plan_cache": {},
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"tidb_enable_non_prepared_plan_cache": {},
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"tidb_plan_cache_max_plan_size": {},
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"tidb_opt_range_max_size": {},
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"tidb_opt_advanced_join_hint": {},
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"tidb_opt_prefix_index_single_scan": {},
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"tidb_store_batch_size": {},
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"mpp_version": {},
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"tidb_enable_inl_join_inner_multi_pattern": {},
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"tidb_opt_enable_late_materialization": {},
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"tidb_opt_ordering_index_selectivity_threshold": {},
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"tidb_opt_enable_mpp_shared_cte_execution": {},
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"tidb_opt_fix_control": {},
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"tidb_runtime_filter_type": {},
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"tidb_runtime_filter_mode": {},
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"tidb_session_alias": {},
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"tidb_opt_objective": {},
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"mpp_exchange_compression_mode": {},
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"tidb_allow_fallback_to_tikv": {},
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"tiflash_fastscan": {},
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"tiflash_fine_grained_shuffle_batch_size": {},
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"tiflash_fine_grained_shuffle_stream_count": {},
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// This var is used during the planner's preprocess phase. Need to fix its behavior.
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// "tidb_read_staleness": {},
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"tidb_enable_paging": {},
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"tidb_read_consistency": {},
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"tidb_distsql_scan_concurrency": {},
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"tidb_opt_insubq_to_join_and_agg": {},
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"tidb_opt_prefer_range_scan": {},
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"tidb_opt_enable_correlation_adjustment": {},
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"tidb_opt_limit_push_down_threshold": {},
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"tidb_opt_correlation_threshold": {},
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"tidb_opt_correlation_exp_factor": {},
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"tidb_opt_cpu_factor": {},
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"tidb_opt_copcpu_factor": {},
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"tidb_opt_tiflash_concurrency_factor": {},
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"tidb_opt_network_factor": {},
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"tidb_opt_scan_factor": {},
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"tidb_opt_desc_factor": {},
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"tidb_opt_seek_factor": {},
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"tidb_opt_memory_factor": {},
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"tidb_opt_disk_factor": {},
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"tidb_opt_concurrency_factor": {},
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"tidb_opt_force_inline_cte": {},
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"tidb_index_join_batch_size": {},
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"tidb_index_lookup_size": {},
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"tidb_index_serial_scan_concurrency": {},
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"tidb_allow_batch_cop": {},
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"tidb_allow_mpp": {},
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"tidb_enforce_mpp": {},
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"tidb_max_bytes_before_tiflash_external_join": {},
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"tidb_max_bytes_before_tiflash_external_group_by": {},
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"tidb_max_bytes_before_tiflash_external_sort": {},
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"tidb_min_paging_size": {},
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"tidb_max_paging_size": {},
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"tidb_enable_cascades_planner": {},
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"tidb_merge_join_concurrency": {},
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"tidb_index_merge_intersection_concurrency": {},
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"tidb_opt_projection_push_down": {},
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"tidb_enable_vectorized_expression": {},
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"tidb_opt_join_reorder_threshold": {},
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"tidb_enable_index_merge": {},
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"tidb_enable_extended_stats": {},
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"tidb_isolation_read_engines": {},
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"tidb_executor_concurrency": {},
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"tidb_partition_prune_mode": {},
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"tidb_enable_index_merge_join": {},
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"tidb_enable_ordered_result_mode": {},
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"tidb_enable_pseudo_for_outdated_stats": {},
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"tidb_stats_load_sync_wait": {},
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"tidb_cost_model_version": {},
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"tidb_index_join_double_read_penalty_cost_rate": {},
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"tidb_default_string_match_selectivity": {},
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"tidb_enable_prepared_plan_cache": {},
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"tidb_enable_non_prepared_plan_cache": {},
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"tidb_plan_cache_max_plan_size": {},
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"tidb_opt_range_max_size": {},
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"tidb_opt_advanced_join_hint": {},
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"tidb_opt_prefix_index_single_scan": {},
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"tidb_store_batch_size": {},
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"mpp_version": {},
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"tidb_enable_inl_join_inner_multi_pattern": {},
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"tidb_opt_enable_late_materialization": {},
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"tidb_opt_ordering_index_selectivity_threshold": {},
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"tidb_opt_enable_mpp_shared_cte_execution": {},
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"tidb_opt_fix_control": {},
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"tidb_runtime_filter_type": {},
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"tidb_runtime_filter_mode": {},
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"tidb_session_alias": {},
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"tidb_opt_objective": {},
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"mpp_exchange_compression_mode": {},
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"tidb_allow_fallback_to_tikv": {},
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"tiflash_fastscan": {},
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"tiflash_fine_grained_shuffle_batch_size": {},
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"tiflash_fine_grained_shuffle_stream_count": {},
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// Variables that is compatible with MySQL.
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"cte_max_recursion_depth": {},
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"sql_mode": {},
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@ -477,26 +477,6 @@ set @@tidb_enable_null_aware_anti_join=default;
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select @@tidb_enable_null_aware_anti_join;
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@@tidb_enable_null_aware_anti_join
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1
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select /*+ set_var(tidb_read_staleness=0) */ @@tidb_read_staleness;
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@@tidb_read_staleness
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0
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select @@tidb_read_staleness;
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@@tidb_read_staleness
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0
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set @@tidb_read_staleness=default;
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select @@tidb_read_staleness;
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@@tidb_read_staleness
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0
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select /*+ set_var(tidb_read_staleness=-1) */ @@tidb_read_staleness;
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@@tidb_read_staleness
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-1
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select @@tidb_read_staleness;
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@@tidb_read_staleness
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0
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set @@tidb_read_staleness=default;
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select @@tidb_read_staleness;
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@@tidb_read_staleness
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0
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select /*+ set_var(tidb_enable_paging=0) */ @@tidb_enable_paging;
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@@tidb_enable_paging
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0
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@ -196,14 +196,14 @@ select /*+ set_var(tidb_enable_null_aware_anti_join=1) */ @@tidb_enable_null_awa
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select @@tidb_enable_null_aware_anti_join;
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set @@tidb_enable_null_aware_anti_join=default;
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select @@tidb_enable_null_aware_anti_join;
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select /*+ set_var(tidb_read_staleness=0) */ @@tidb_read_staleness;
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select @@tidb_read_staleness;
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set @@tidb_read_staleness=default;
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select @@tidb_read_staleness;
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select /*+ set_var(tidb_read_staleness=-1) */ @@tidb_read_staleness;
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select @@tidb_read_staleness;
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set @@tidb_read_staleness=default;
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select @@tidb_read_staleness;
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# select /*+ set_var(tidb_read_staleness=0) */ @@tidb_read_staleness;
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# select @@tidb_read_staleness;
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# set @@tidb_read_staleness=default;
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# select @@tidb_read_staleness;
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# select /*+ set_var(tidb_read_staleness=-1) */ @@tidb_read_staleness;
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# select @@tidb_read_staleness;
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# set @@tidb_read_staleness=default;
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# select @@tidb_read_staleness;
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select /*+ set_var(tidb_enable_paging=0) */ @@tidb_enable_paging;
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select @@tidb_enable_paging;
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set @@tidb_enable_paging=default;
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