// handle clash with already staged entries
case LeftTuple.INSERT:
leftTuples.removeInsert( leftTuple );
break;
case LeftTuple.UPDATE:
leftTuples.removeUpdate( leftTuple );
break;
}
lm.setCounter( lm.getCounter() - 1 ); // we need this to track when we unlink
if ( lm.getCounter() == 0 ) {