// fetch to (possibly) reduce amount of data loads from disk.
if (this.joinedHeap != null) {
KeyValue nextJoinedKv = joinedHeap.peek();
// If joinedHeap is pointing to some other row, try to seek to a correct one.
boolean mayHaveData =
(nextJoinedKv != null && nextJoinedKv.matchingRow(currentRow, offset, length))
|| (this.joinedHeap.requestSeek(
KeyValue.createFirstOnRow(currentRow, offset, length), true, true)
&& joinedHeap.peek() != null
&& joinedHeap.peek().matchingRow(currentRow, offset, length));
if (mayHaveData) {