}
                } else {
                    itemList.add(item);
                }
            }
            if (updater != null) {
                final StemmerOverrideItem item = updater.commit();
                if (item != null) {
                    itemList.add(item);
                }
            }
            stemmerOverrideItemList = itemList;
        } catch (final IOException e) {

                    }
                } else {
                    itemList.add(item);
                }
            }
            if (updater != null) {
                final CharMappingItem item = updater.commit();
                if (item != null) {
                    itemList.add(item);
                }
            }
            mappingItemList = itemList;
        } catch (final IOException e) {

                    deleteDocuments();
                }
            }
        }
        return true;
    }

    @Override
    public void commit() {
        try {
            if (logger.isDebugEnabled()) {
                logger.debug("Shutting down thread executor.");
            }
            executor.shutdown();

                            itemList.add(item);
                        }
                    }
                }
            }
            if (updater != null) {
                final SynonymItem item = updater.commit();
                if (item != null) {
                    itemList.add(item);
                }
            }
            synonymItemList = itemList;
        } catch (final IOException e) {

                            dataConfig.getConfigId() + ":" + dataConfig.getName(), e);
                } finally {
                    indexUpdateCallback.commit();
                    deleteOldDocs();
                }
            }
        }

        private void deleteOldDocs() {
            if (Constants.FALSE.equals(initParamMap.getAsString(DELETE_OLD_DOCS))) {