hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTree.java [542:588]:
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            if (filterFields != null) {
                indexTuple = new PermutingTupleReference(rtreeFields);
                filterCmp = MultiComparator.create(component.getLSMComponentFilter().getFilterCmpFactories());
                filterTuple = new PermutingTupleReference(filterFields);
            } else {
                indexTuple = null;
                filterCmp = null;
                filterTuple = null;
            }
        }

        @Override
        public void add(ITupleReference tuple) throws HyracksDataException, IndexException {
            try {
                ITupleReference t;
                if (indexTuple != null) {
                    indexTuple.reset(tuple);
                    t = indexTuple;
                } else {
                    t = tuple;
                }

                bulkLoader.add(t);

                if (filterTuple != null) {
                    filterTuple.reset(tuple);
                    component.getLSMComponentFilter().update(filterTuple, filterCmp);
                }
            } catch (IndexException | HyracksDataException | RuntimeException e) {
                cleanupArtifacts();
                throw e;
            }
            if (isEmptyComponent) {
                isEmptyComponent = false;
            }
        }

        @Override
        public void end() throws HyracksDataException, IndexException {
            if (!cleanedUpArtifacts) {

                if (component.getLSMComponentFilter() != null) {
                    filterManager.writeFilterInfo(component.getLSMComponentFilter(),
                            ((LSMRTreeDiskComponent) component).getRTree());
                }

                bulkLoader.end();
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hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuples.java [384:430]:
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            if (filterFields != null) {
                indexTuple = new PermutingTupleReference(rtreeFields);
                filterCmp = MultiComparator.create(component.getLSMComponentFilter().getFilterCmpFactories());
                filterTuple = new PermutingTupleReference(filterFields);
            } else {
                indexTuple = null;
                filterCmp = null;
                filterTuple = null;
            }
        }

        @Override
        public void add(ITupleReference tuple) throws HyracksDataException, IndexException {
            try {
                ITupleReference t;
                if (indexTuple != null) {
                    indexTuple.reset(tuple);
                    t = indexTuple;
                } else {
                    t = tuple;
                }

                bulkLoader.add(t);

                if (filterTuple != null) {
                    filterTuple.reset(tuple);
                    component.getLSMComponentFilter().update(filterTuple, filterCmp);
                }

            } catch (IndexException | HyracksDataException | RuntimeException e) {
                cleanupArtifacts();
                throw e;
            }
            if (isEmptyComponent) {
                isEmptyComponent = false;
            }
        }

        @Override
        public void end() throws HyracksDataException, IndexException {
            if (!cleanedUpArtifacts) {

                if (component.getLSMComponentFilter() != null) {
                    filterManager.writeFilterInfo(component.getLSMComponentFilter(),
                            ((LSMRTreeDiskComponent) component).getRTree());
                }
                bulkLoader.end();
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