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Fixed the concurrency control issue with the PS cache

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This commit is contained in:
GongYusen
2024-03-28 11:15:25 +00:00
committed by ob-robot
parent 4130e898e3
commit 8bbd81b3d9
3 changed files with 14 additions and 8 deletions
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4
src/sql/plan_cache/ob_prepare_stmt_struct.cpp
View File

@ -316,7 +316,8 @@ ObPsStmtInfo::ObPsStmtInfo(ObIAllocator *inner_allocator,
raw_sql_(),
raw_params_(inner_allocator),
raw_params_idx_(inner_allocator),
literal_stmt_type_(stmt::T_NONE)
literal_stmt_type_(stmt::T_NONE),
erased_(false)
{
}
@ -462,6 +463,7 @@ int ObPsStmtInfo::deep_copy(const ObPsStmtInfo &other)
is_expired_ = other.is_expired_;
is_expired_evicted_ = other.is_expired_evicted_;
literal_stmt_type_ = other.literal_stmt_type_;
erased_ = other.erased_;
if (other.get_dep_objs_cnt() > 0) {
dep_objs_cnt_ = other.get_dep_objs_cnt();
if (NULL == (dep_objs_ = reinterpret_cast<ObSchemaObjVersion *>

2
src/sql/plan_cache/ob_prepare_stmt_struct.h
View File

@ -251,6 +251,7 @@ public:
void set_is_expired() { ATOMIC_STORE(&is_expired_, true); }
bool is_expired() { return ATOMIC_LOAD(&is_expired_); }
bool *get_is_expired_evicted_ptr() { return &is_expired_evicted_; }
bool try_set_erase_flag() { return ATOMIC_BCAS(&erased_, false, true); }
DECLARE_VIRTUAL_TO_STRING;
@ -292,6 +293,7 @@ private:
ObFixedArray<ObPCParam *, common::ObIAllocator> raw_params_;
ObFixedArray<int64_t, common::ObIAllocator> raw_params_idx_;
stmt::StmtType literal_stmt_type_;
volatile bool erased_;
};
struct TypeInfo {

6
src/sql/plan_cache/ob_ps_cache.cpp
View File

@ -152,6 +152,9 @@ int ObPsCache::deref_ps_stmt(const ObPsStmtId stmt_id, bool erase_item/*=false*/
if (erase_item) { // dec cached ref
if (OB_FAIL(erase_stmt_item(stmt_id, ps_sql_key))) {
LOG_WARN("fail to erase stmt", K(ret));
} else if (ps_info->try_set_erase_flag() && OB_SUCCESS != (tmp_ret = deref_stmt_info(stmt_id))) {
ret = tmp_ret;
LOG_WARN("deref stmt info failed", K(ret), K(stmt_id), K(ps_sql_key));
}
} else { // dec session ref
if (OB_ISNULL(ps_info->get_ps_item())) {
@ -160,8 +163,6 @@ int ObPsCache::deref_ps_stmt(const ObPsStmtId stmt_id, bool erase_item/*=false*/
} else {
ps_info->get_ps_item()->dec_ref_count_check_erase();
}
}
if (OB_SUCCESS != (tmp_ret = deref_stmt_info(stmt_id))) {
ret = tmp_ret; //previous ret ignore
LOG_WARN("deref stmt info failed", K(ret), K(stmt_id), K(ps_sql_key));
@ -169,6 +170,7 @@ int ObPsCache::deref_ps_stmt(const ObPsStmtId stmt_id, bool erase_item/*=false*/
LOG_TRACE("deref stmt info success", K(stmt_id), K(ps_sql_key), K(ret));
}
}
}
return ret;
}