hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

[FEAT MERGE] Optimize dml performance in multi-local index scenarios

Browse Source 
Co-authored-by: Handora <qcdsr970209@gmail.com>
Co-authored-by: Naynahs <cfzy002@126.com>
Co-authored-by: ZenoWang <wzybuaasoft@163.com>
This commit is contained in:
windye
2024-04-16 15:27:19 +00:00
committed by ob-robot
parent 5c28cef93c
commit 7aca4ef065
59 changed files with 696875 additions and 299635 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/sql/ob_sql_trans_control.cpp
View File

@ -730,31 +730,41 @@ int ObSqlTransControl::stmt_sanity_check_(ObSQLSessionInfo *session,
ObPhysicalPlanCtx *plan_ctx)
{
int ret = OB_SUCCESS;
auto current_consist_level = plan_ctx->get_consistency_level();
ObConsistencyLevel current_consist_level = plan_ctx->get_consistency_level();
CK (current_consist_level != ObConsistencyLevel::INVALID_CONSISTENCY);
bool is_plain_select = plan->is_plain_select();
// adjust stmt's consistency level
if (OB_SUCC(ret)) {
// Weak read statement with inner table should be converted to strong read.
// For example, schema refresh statement;
if (plan->is_contain_inner_table() ||
(!is_plain_select && current_consist_level != ObConsistencyLevel::STRONG)) {
(!plan->is_plain_select() && current_consist_level != ObConsistencyLevel::STRONG)) {
plan_ctx->set_consistency_level(ObConsistencyLevel::STRONG);
}
}
// check isolation with consistency type
if (OB_SUCC(ret) && session->is_in_transaction()) {
// check consistency type volatile
ObConsistencyLevel current_consist_level = plan_ctx->get_consistency_level();
if (current_consist_level == ObConsistencyLevel::WEAK) {
// read write transaction
if (!session->get_tx_desc()->is_clean()) {
plan_ctx->set_consistency_level(ObConsistencyLevel::STRONG);
}
}
// check isolation with consistency type
auto iso = session->get_tx_desc()->get_isolation_level();
auto cl = plan_ctx->get_consistency_level();
if (ObConsistencyLevel::WEAK == cl && (iso == ObTxIsolationLevel::SERIAL || iso == ObTxIsolationLevel::RR)) {
if (ObConsistencyLevel::WEAK == cl &&
(iso == ObTxIsolationLevel::SERIAL || iso == ObTxIsolationLevel::RR)) {
ret = OB_NOT_SUPPORTED;
TRANS_LOG(ERROR, "statement of weak consistency is not allowed under SERIALIZABLE isolation",
KR(ret), "trans_id", session->get_tx_id(), "consistency_level", cl);
LOG_USER_ERROR(OB_NOT_SUPPORTED, "weak consistency under SERIALIZABLE and REPEATABLE-READ isolation level");
}
}
return ret;
}