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Merge pull request #1981 from citusdata/faster_execute_subplans 

Skip call to ActiveReadableNodeList when there are no subplans
pull/1969/head
Marco Slot 2018-01-29 17:20:44 +01:00 committed by GitHub
parent ff26bcd5a5 bd0ebac865
commit 0303dfc463
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1 changed files with 9 additions and 1 deletions
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10
src/backend/distributed/executor/subplan_execution.c
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@ -34,9 +34,17 @@ ExecuteSubPlans(DistributedPlan *distributedPlan)
uint64 planId = distributedPlan->planId; uint64 planId = distributedPlan->planId;
List *subPlanList = distributedPlan->subPlanList; List *subPlanList = distributedPlan->subPlanList;
ListCell *subPlanCell = NULL; ListCell *subPlanCell = NULL;
List *nodeList = ActiveReadableNodeList(); List *nodeList = NIL;
bool writeLocalFile = false; bool writeLocalFile = false;
if (subPlanList == NIL)
{
/* no subplans to execute */
return;
}
nodeList = ActiveReadableNodeList();
foreach(subPlanCell, subPlanList) foreach(subPlanCell, subPlanList)
{ {
DistributedSubPlan *subPlan = (DistributedSubPlan *) lfirst(subPlanCell); DistributedSubPlan *subPlan = (DistributedSubPlan *) lfirst(subPlanCell);