final HttpSession session = r.getSession(false);
            if (session != null) {
                return session.getId();
            }
            final String preference = r.getParameter("preference");
            if (preference != null) {
                return Integer.toString(preference.hashCode());
            }

            }
            cb.query().addOrderBy_CreatedTime_Asc();
            cb.fetchFirst(fessConfig.getPageThumbnailQueueMaxFetchSizeAsInteger());
        }).stream().map(entity -> {
            idList.add(entity.getId());
            if (!cleanup) {
                return executorService.submit(() -> process(fessConfig, entity));
            }
            if (logger.isDebugEnabled()) {

                    final BulkRequestBuilder bulkRequest = client.prepareBulk();
                    for (final SearchHit hit : hits) {
                        bulkRequest.add(client.prepareDelete().setIndex(hit.getIndex()).setId(hit.getId()));
                    }
                    return bulkRequest.execute();
                });
                if (bulkResponse.hasFailures()) {

    private void addMdcContext(Map<String, Object> context) {
        // Add MDC context efficiently
        context.put("thread", Thread.currentThread().getName());
        context.put("threadId", Thread.currentThread().getId());

        String sessionId = MDC.get("sessionId");
        if (sessionId != null) {
            context.put("sessionId", sessionId);
        }
        String userId = MDC.get("userId");

    /**
     * @return
     * @throws IOException
     */
    private int negotiateWrite(final CommonServerMessageBlockRequest req, final boolean setmid) throws IOException {
        if (setmid) {
            makeKey(req);
        } else {
            req.setMid(0);
            this.mid.set(1);
        }
        final int n = req.encode(this.sbuf, 4);

        assertEquals(1, response.getNum());
        assertEquals("検索 エンジン", response.getWords().get(0));

        suggester.indexer().delete(items[0].getId());
        suggester.refresh();
        SuggestResponse response2 = suggester.suggest().setQuery("kensaku").setSuggestDetail(true).execute().getResponse();
        assertEquals(0, response2.getNum());
    }

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