Fix typo in CostCalculatorWithEstimatedExchanges
@@ -158,7 +158,7 @@ public class CostCalculatorWithEstimatedExchanges
public LocalCostEstimate visitUnion(UnionNode node, Void context)
{
// this assumes that all union inputs will be gathered over the network
- // that is not aways true
+ // that is not always true
// but this estimate is better that returning UNKNOWN, as it sets
// cumulative cost to unknown
double inputSizeInBytes = getStats(node).getOutputSizeInBytes(node.getOutputVariables());
