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impl fixed route mode for temporary tables

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This commit is contained in:
bf0
2021-08-24 19:25:17 +08:00
committed by wangzelin.wzl
parent 67f64412ad
commit dde5e02569
10 changed files with 93 additions and 4 deletions
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1
src/share/system_variable/ob_sys_var_class_type.h
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@ -212,6 +212,7 @@ enum ObSysVarClassType {
SYS_VAR_NLS_CURRENCY = 10111,
SYS_VAR_NLS_ISO_CURRENCY = 10112,
SYS_VAR_NLS_DUAL_CURRENCY = 10113,
SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED = 10116,
};
}

1
src/share/system_variable/ob_system_variable_alias.h
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@ -208,6 +208,7 @@ static const char* const OB_SV_PERFORMANCE_SCHEMA = "performance_schema";
static const char* const OB_SV_NLS_CURRENCY = "nls_currency";
static const char* const OB_SV_NLS_ISO_CURRENCY = "nls_iso_currency";
static const char* const OB_SV_NLS_DUAL_CURRENCY = "nls_dual_currency";
static const char* const OB_SV__OB_PROXY_SESSION_TEMPORARY_TABLE_USED = "_ob_proxy_session_temporary_table_used";
} // namespace share
} // namespace oceanbase

16
src/share/system_variable/ob_system_variable_factory.cpp
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@ -59,6 +59,7 @@ const char* ObSysVarFactory::SYS_VAR_NAMES_SORTED_BY_NAME[] = {"_enable_parallel
"_force_parallel_query_dop",
"_groupby_nopushdown_cut_ratio",
"_nlj_batching_enabled",
"_ob_proxy_session_temporary_table_used",
"_ob_px_bcast_optimization",
"_ob_px_slave_mapping_threshold",
"_ob_use_parallel_execution",
@ -254,6 +255,7 @@ const ObSysVarClassType ObSysVarFactory::SYS_VAR_IDS_SORTED_BY_NAME[] = {SYS_VAR
SYS_VAR__FORCE_PARALLEL_QUERY_DOP,
SYS_VAR__GROUPBY_NOPUSHDOWN_CUT_RATIO,
SYS_VAR__NLJ_BATCHING_ENABLED,
SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED,
SYS_VAR__OB_PX_BCAST_OPTIMIZATION,
SYS_VAR__OB_PX_SLAVE_MAPPING_THRESHOLD,
SYS_VAR__OB_USE_PARALLEL_EXECUTION,
@ -636,7 +638,8 @@ const char* ObSysVarFactory::SYS_VAR_NAMES_SORTED_BY_ID[] = {"auto_increment_inc
"performance_schema",
"nls_currency",
"nls_iso_currency",
"nls_dual_currency"};
"nls_dual_currency",
"_ob_proxy_session_temporary_table_used"};
bool ObSysVarFactory::sys_var_name_case_cmp(const char* name1, const ObString& name2)
{
@ -2958,6 +2961,17 @@ int ObSysVarFactory::create_sys_var(ObSysVarClassType sys_var_id, ObBasicSysVar*
}
break;
}
case SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED: {
void* ptr = NULL;
if (OB_ISNULL(ptr = allocator_.alloc(sizeof(ObSysVarObProxySessionTemporaryTableUsed)))) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_ERROR("fail to alloc memory", K(ret), K(sizeof(ObSysVarObProxySessionTemporaryTableUsed)));
} else if (OB_ISNULL(sys_var_ptr = new (ptr) ObSysVarObProxySessionTemporaryTableUsed())) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_ERROR("fail to new ObSysVarObProxySessionTemporaryTableUsed", K(ret));
}
break;
}
default: {
ret = OB_ERR_UNEXPECTED;

15
src/share/system_variable/ob_system_variable_factory.h
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@ -2634,6 +2634,19 @@ public:
return ObSysVariables::get_default_value(193);
}
};
class ObSysVarObProxySessionTemporaryTableUsed : public ObBoolSysVar {
public:
ObSysVarObProxySessionTemporaryTableUsed() : ObBoolSysVar(NULL, NULL, NULL, NULL, NULL)
{}
inline virtual ObSysVarClassType get_type() const
{
return SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED;
}
inline virtual const common::ObObj& get_global_default_value() const
{
return ObSysVariables::get_default_value(194);
}
};
class ObSysVarFactory {
public:
@ -2651,7 +2664,7 @@ public:
static const common::ObString get_sys_var_name_by_id(ObSysVarClassType sys_var_id);
const static int64_t MYSQL_SYS_VARS_COUNT = 81;
const static int64_t OB_SYS_VARS_COUNT = 113;
const static int64_t OB_SYS_VARS_COUNT = 114;
const static int64_t ALL_SYS_VARS_COUNT = MYSQL_SYS_VARS_COUNT + OB_SYS_VARS_COUNT;
const static int16_t OB_SPECIFIC_SYS_VAR_ID_OFFSET = 10000;

13
src/share/system_variable/ob_system_variable_init.cpp
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@ -2277,13 +2277,24 @@ static struct VarsInit {
ObSysVarsIdToArrayIdx[SYS_VAR_NLS_DUAL_CURRENCY] = 193;
ObSysVars[193].alias_ = "OB_SV_NLS_DUAL_CURRENCY";
ObSysVars[194].info_ = "this value is true if we have executed set transaction stmt, until a transaction "
"commit(explicit or implicit) successfully";
ObSysVars[194].name_ = "_ob_proxy_session_temporary_table_used";
ObSysVars[194].data_type_ = ObIntType;
ObSysVars[194].value_ = "0";
ObSysVars[194].flags_ = ObSysVarFlag::READONLY | ObSysVarFlag::SESSION_SCOPE | ObSysVarFlag::INVISIBLE;
ObSysVars[194].id_ = SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED;
cur_max_var_id = MAX(cur_max_var_id, static_cast<int64_t>(SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED));
ObSysVarsIdToArrayIdx[SYS_VAR__OB_PROXY_SESSION_TEMPORARY_TABLE_USED] = 194;
ObSysVars[194].alias_ = "OB_SV__OB_PROXY_SESSION_TEMPORARY_TABLE_USED";
if (cur_max_var_id >= ObSysVarFactory::OB_MAX_SYS_VAR_ID) {
HasInvalidSysVar = true;
}
}
} vars_init;
static int64_t var_amount = 194;
static int64_t var_amount = 195;
int64_t ObSysVariables::get_all_sys_var_count()
{

12
src/share/system_variable/ob_system_variable_init.json
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@ -2582,5 +2582,17 @@
"info_cn": "U数字格式元素的双货币符号",
"background_cn": "兼容 oracle number format model U 数字格式元素",
"ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/efqk1r"
},
"_ob_proxy_session_temporary_table_used": {
"id": 10116,
"name": "_ob_proxy_session_temporary_table_used",
"value": "0",
"data_type": "bool",
"info": "this value is true if we have executed set transaction stmt, until a transaction commit(explicit or implicit) successfully",
"flags": "READONLY | SESSION | INVISIBLE",
"publish_version": "310",
"info_cn": "标记当前Session是否使用过Session级别临时表，用于告知proxy并修改路由决策",
"background_cn": "为了解决Session临时表断链接时可能导致的问题，当Session临时表第一次使用后，后续请求Proxy只会路由到同一个Session",
"ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/hinq1e"
}
}