NodeSequence left = createNodeSequence(originalQuery, joinQueryContext, leftPlan, leftColumns, sources);
NodeSequence right = createNodeSequence(originalQuery, joinQueryContext, rightPlan, rightColumns, sources);
// Figure out the join algorithm ...
JoinAlgorithm algorithm = plan.getProperty(Property.JOIN_ALGORITHM, JoinAlgorithm.class);
JoinType joinType = plan.getProperty(Property.JOIN_TYPE, JoinType.class);
JoinCondition joinCondition = plan.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
boolean pack = false;
boolean useHeap = false;
if (0 >= right.getRowCount() && right.getRowCount() < 100) useHeap = true;