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[FEAT MERGE] implement mysql dblink and read consistency

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Co-authored-by: xianyu-w <707512433@qq.com>
Co-authored-by: sdc <njucssdc@gmail.com>
Co-authored-by: seuwebber <webber_code@163.com>
This commit is contained in:
cqliang1995
2023-05-09 18:32:03 +00:00
committed by ob-robot
parent 38b78ad442
commit 4108e781d4
132 changed files with 2726 additions and 818 deletions
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8
src/sql/resolver/dml/ob_hint.cpp
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@ -294,7 +294,8 @@ bool ObGlobalHint::has_hint_exclude_concurrent() const
|| !monitoring_ids_.empty()
|| !dops_.empty()
|| !opt_params_.empty()
|| !ob_ddl_schema_versions_.empty();
|| !ob_ddl_schema_versions_.empty()
|| flashback_read_tx_uncommitted_;
}
void ObGlobalHint::reset()
@ -326,6 +327,7 @@ void ObGlobalHint::reset()
enable_append_ = false;
osg_hint_.flags_ = 0;
has_dbms_stats_hint_ = false;
flashback_read_tx_uncommitted_ = false;
dynamic_sampling_ = ObGlobalHint::UNSET_DYNAMIC_SAMPLING;
}
@ -353,6 +355,7 @@ int ObGlobalHint::merge_global_hint(const ObGlobalHint &other)
enable_append_ |= other.enable_append_;
osg_hint_.flags_ |= other.osg_hint_.flags_;
has_dbms_stats_hint_ |= other.has_dbms_stats_hint_;
flashback_read_tx_uncommitted_ |= other.flashback_read_tx_uncommitted_;
merge_dynamic_sampling_hint(other.dynamic_sampling_);
if (OB_FAIL(merge_monitor_hints(other.monitoring_ids_))) {
LOG_WARN("failed to merge monitor hints", K(ret));
@ -532,6 +535,9 @@ int ObGlobalHint::print_global_hint(PlanText &plan_text, const bool ignore_paral
if (OB_SUCC(ret) && has_dbms_stats_hint()) {
PRINT_GLOBAL_HINT_STR("DBMS_STATS");
}
if (OB_SUCC(ret) && get_flashback_read_tx_uncommitted()) {
PRINT_GLOBAL_HINT_STR("FLASHBACK_READ_TX_UNCOMMITTED");
}
return ret;
}