Update java doc after introducing yield signal
After introducing yield signal false is returned by `LookupJoinOperator::joinCurrentPosition`
either because pageBuilder became full or because yield signal was set.
@@ -513,7 +513,7 @@ public class LookupJoinOperator
* for the current probe position, calling this again will produce rows that wasn't been produced in previous
* invocations.
*
- * @return true if all eligible rows have been produced; false otherwise (because pageBuilder became full)
+ * @return true if all eligible rows have been produced; false otherwise
*/
private boolean joinCurrentPosition(LookupSource lookupSource, DriverYieldSignal yieldSignal)
{
