[PHOENIX-5106] Avoid getting an explain plan for each query (even without tracing)

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.15.0, 5.1.0
• Labels: performance
• Assignee: Lars Hofhansl
• Reporter: Lars Hofhansl
• Created: 21/Jan/19 01:31
• Updated: 15/Jan/21 09:01
• Resolved: 30/Jan/19 23:41

Description

See this code fragment in BaseQueryPlan.iterator(...):

        // wrap the iterator so we start/end tracing as we expect
        TraceScope scope =
                Tracing.startNewSpan(context.getConnection(), "Creating basic query for "
                        + getPlanSteps(iterator));
        return (scope.getSpan() != null) ? new TracingIterator(scope, iterator) : iterator;

This will get the plan steps for each and every call to iterator, whether we're tracing or not.