}
alias = order[tag];
// alias = (byte)tag;
// compute keys and values as StandardObjects
AbstractMapJoinKey keyMap = JoinUtil.computeMapJoinKeys(row, joinKeys.get(alias),
joinKeysObjectInspectors.get(alias));
Object[] value = JoinUtil.computeMapJoinValues(row, joinValues.get(alias),
joinValuesObjectInspectors.get(alias), joinFilters.get(alias), joinFilterObjectInspectors
.get(alias), noOuterJoin);