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[SCN REFACTOR] replace flash back snapshot and remove read snapshot session

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This commit is contained in:
wangt1xiuyi
2022-11-28 01:54:50 +00:00
committed by ob-robot
parent c4c13f6296
commit 11485d6a98
268 changed files with 6763 additions and 7737 deletions
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37
src/sql/resolver/dml/ob_hint.cpp
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@ -530,6 +530,14 @@ bool ObOptParamHint::is_param_val_valid(const OptParamType param_type, const ObO
is_valid = val.is_int() && (0 <= val.get_int() && 65535 >= val.get_int());
break;
}
case DDL_EXECUTION_ID: {
is_valid = val.is_int() && (0 < val.get_int());
break;
}
case DDL_TASK_ID: {
is_valid = val.is_int() && (0 < val.get_int());
break;
}
default:
LOG_TRACE("invalid opt param val", K(param_type), K(val));
break;
@ -645,6 +653,7 @@ ObItemType ObHint::get_hint_type(ObItemType type)
case T_NO_PULLUP_EXPR : return T_PULLUP_EXPR;
// optimize hint
case T_NO_USE_DAS_HINT: return T_USE_DAS_HINT;
case T_ORDERED: return T_LEADING;
case T_NO_USE_MERGE: return T_USE_MERGE;
case T_NO_USE_HASH: return T_USE_HASH;
@ -700,6 +709,7 @@ const char* ObHint::get_hint_name(ObItemType type, bool is_enable_hint /* defaul
case T_INDEX_HINT: return "INDEX";
case T_FULL_HINT: return "FULL";
case T_NO_INDEX_HINT: return "NO_INDEX";
case T_USE_DAS_HINT: return is_enable_hint ? "USE_DAS" : "NO_USE_DAS";
case T_LEADING: return is_enable_hint ? "LEADING" : "ORDERED";
case T_USE_MERGE: return is_enable_hint ? "USE_MERGE" : "NO_USE_MERGE";
case T_USE_HASH: return is_enable_hint ? "USE_HASH" : "NO_USE_HASH";
@ -1473,7 +1483,7 @@ int ObSemiToInnerHint::print_hint_desc(planText &plan_text) const
//do nothing
} else if (tables_.count() > 1 && OB_FAIL(BUF_PRINTF("("))) {
LOG_WARN("failed to print hint", K(ret));
} else if (OB_FAIL(ObTableInHint::print_join_tables_in_hint(plan_text, tables_))) {
} else if (OB_FAIL(ObTableInHint::print_join_tables_in_hint(plan_text, tables_, true))) {
LOG_WARN("failed to print tables", K(ret));
} else if (tables_.count() > 1 && OB_FAIL(BUF_PRINTF(")"))) {
LOG_WARN("failed to print hint", K(ret));
@ -1621,8 +1631,9 @@ int ObIndexHint::print_hint_desc(planText &plan_text) const
int64_t &pos = plan_text.pos;
if (OB_FAIL(table_.print_table_in_hint(plan_text))) {
LOG_WARN("fail to print table in hint", K(ret));
} else if (T_FULL_HINT != hint_type_ &&
OB_FAIL(BUF_PRINTF(" \"%.*s\"", index_name_.length(), index_name_.ptr()))) {
} else if (T_FULL_HINT == hint_type_ || T_USE_DAS_HINT == hint_type_) {
/* do nothing */
} else if (OB_FAIL(BUF_PRINTF(" \"%.*s\"", index_name_.length(), index_name_.ptr()))) {
LOG_WARN("fail to print index name", K(ret));
}
return ret;
@ -1646,6 +1657,7 @@ int ObJoinHint::print_hint_desc(planText &plan_text) const
char *buf = plan_text.buf;
int64_t &buf_len = plan_text.buf_len;
int64_t &pos = plan_text.pos;
const char* algo_str = get_dist_algo_str();
if (OB_UNLIKELY(tables_.empty())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected join hint", K(ret));
@ -1655,7 +1667,8 @@ int ObJoinHint::print_hint_desc(planText &plan_text) const
LOG_WARN("failed to print join tables", K(ret));
} else if (tables_.count() > 1 && OB_FAIL(BUF_PRINTF(")"))) {
LOG_WARN("failed to print hint", K(ret));
} else if (T_PQ_DISTRIBUTE == hint_type_ && OB_FAIL(BUF_PRINTF(" %s", get_dist_algo_str()))) {
} else if (T_PQ_DISTRIBUTE == hint_type_ && NULL != algo_str
&& OB_FAIL(BUF_PRINTF(" %s", get_dist_algo_str()))) {
LOG_WARN("failed to print dist algo", K(ret));
}
return ret;
@ -1740,6 +1753,7 @@ int ObJoinFilterHint::print_hint_desc(planText &plan_text) const
int ObPQSetHint::assign(const ObPQSetHint &other)
{
int ret = OB_SUCCESS;
left_branch_ = other.left_branch_;
if (OB_FAIL(dist_methods_.assign(other.dist_methods_))) {
LOG_WARN("fail to assign dist methods", K(ret));
} else if (OB_FAIL(ObOptHint::assign(other))) {
@ -1843,6 +1857,9 @@ int ObPQSetHint::print_hint_desc(planText &plan_text) const
if (OB_UNLIKELY(false == is_valid_dist_methods(dist_methods_))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected pq set hint", K(ret));
} else if (!left_branch_.empty()
&& OB_FAIL(BUF_PRINTF(" \"%.*s\"", left_branch_.length(), left_branch_.ptr()))) {
LOG_WARN("failed to print left branch qb name", K(ret));
}
for (int i = 0; OB_SUCC(ret) && i < dist_methods_.count(); ++i) {
if (OB_FAIL(BUF_PRINTF(" %s", get_dist_method_str(dist_methods_.at(i))))) {
@ -1864,7 +1881,9 @@ DistAlgo ObPQSetHint::get_dist_algo(const ObIArray<ObItemType> &dist_methods,
{
DistAlgo dist_algo = DistAlgo::DIST_INVALID_METHOD;
random_none_idx = OB_INVALID_INDEX;
if (dist_methods.count() < 2) {
if (dist_methods.empty()) {
dist_algo = DistAlgo::DIST_BASIC_METHOD;
} else if (dist_methods.count() < 2) {
/* do nothing */
} else if (2 == dist_methods.count()) {
const ObItemType method1 = dist_methods.at(0);
@ -2251,11 +2270,13 @@ bool ObTableInHint::is_match_table_items(ObCollationType cs_type,
return bret;
}
void ObTableInHint::reset(const TableItem& table)
void ObTableInHint::set_table(const TableItem& table)
{
qb_name_.reset();
db_name_.assign_ptr(table.database_name_.ptr(), table.database_name_.length());
qb_name_.assign_ptr(table.qb_name_.ptr(), table.qb_name_.length());
table_name_.assign_ptr(table.get_table_name().ptr(), table.get_table_name().length());
if (table.is_basic_table()) {
db_name_.assign_ptr(table.database_name_.ptr(), table.database_name_.length());
}
}
const char *ObWindowDistHint::get_dist_algo_str(WinDistAlgo dist_algo)