CRITICAL: No active transaction tracking in executor #137

Why is this an issue?

SeqScanPlan::open() and other operators accept no transaction context:

void SeqScanPlan::open() {
    table_.open();  // Which transaction is this running under?
    iterator_ = std::make_unique<storage::HeapTable::Iterator>(table_);
}

Concurrent queries have no isolation. Cannot distinguish committed vs uncommitted data.

What is causing it?

No transaction context passed to plan operators.

How can it be solved?

Add transaction context to open() methods.

Category

• Small
• Medium
• Large
• Critical

Severity

• Low
• Medium
• High
• Critical