// Need to consider all iterators.
// Set all iterators to insertion point.
int i = 0;
while (i <= lvi) {
final ComparableIntPointerIterator it = this.indexes[i];
it.resetConcurrentModification();
it.moveToFirst();
if (it.isValid()) {
heapify_up(it, i, 1);
++i;
} else {