counter++;
        }

        @Override
        public void close() {
            if (counter > 1) {
                counter--;
            } else {
                contextLocal.remove();
                if (context != null) {
                    try {
                        context.close();
                    } catch (final NamingException e) {
                        // ignored

                    throw new DictionaryException("Failed to write: " + item, e);
                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            try {
                final byte[] buf = new byte[1024];
                while ((is.read(buf)) != -1) {}
            } catch (final Exception ignored) {} finally {
                try {
                    is.close();
                } catch (final Exception ignored) {}
            }
        } catch (final Exception ignored) {}
    }

                    throw new DictionaryException("Failed to write: " + item, e);
                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            } catch (final Exception e) {
                logger.warn("Failed to flush indices.", e);
            }
        }
        try {
            client.close();
        } catch (final OpenSearchException e) {
            logger.warn("Failed to close Client: {}", client, e);
        }
    }

    public long updateByQuery(final String index, final Function<SearchRequestBuilder, SearchRequestBuilder> option,

                    throw new DictionaryException("Failed to write: " + item, e);
                }
            }
            return null;
        }

        @Override
        public void close() {
            try {
                writer.flush();
            } catch (final IOException e) {
                // ignore
            }
            CloseableUtil.closeQuietly(writer);

            this.windowSize = 2 * maxPageSize;
        } else {
            this.windowSize = windowSize;
        }
    }

    @Override
    @PreDestroy
    public void close() throws Exception {
        if (executorService != null) {
            try {
                executorService.shutdown();
                executorService.awaitTermination(60, TimeUnit.SECONDS);

    /** The key of the message: Search Options */
    public static final String LABELS_search_options = "{labels.search_options}";

    /** The key of the message: Close */
    public static final String LABELS_search_options_close = "{labels.search_options_close}";

    /** The key of the message: Clear */
    public static final String LABELS_search_options_clear = "{labels.search_options_clear}";

            new Thread(() -> {
                try {
                    CloseableUtil.closeQuietly(process.getInputStream());
                } catch (final Exception e) {
                    logger.warn("Could not close a process input stream.", e);
                } finally {
                    latch.countDown();
                }
            }, "ProcessCloser-input-" + sessionId).start();
            new Thread(() -> {

                        indexUpdater.addFinishedSessionId(sid);
                        try {
                            crawler.close();
                        } catch (final Exception e) {
                            logger.warn("Failed to close the crawler.", e);
                        }
                    }
                    if (!Constants.DONE.equals(crawlerStatusList.get(i))) {