@Override
            public long getExecuteTime() {
                return execTime.get();
            }

            @Override
            public void commit() {
                // No-op for test
            }
        };

        // Test initial state
        assertEquals(0L, callback.getDocumentSize());
        assertEquals(0L, callback.getExecuteTime());

        // Test store method

        assertEquals(0, indexUpdateCallback.getExecuteTime());

        systemHelper.processingTime = 100L;

        DataStoreParams paramMap = new DataStoreParams();
        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("url", "http://example.com/test");

        indexUpdateCallback.store(paramMap, dataMap);
        assertEquals(100L, indexUpdateCallback.getExecuteTime());

     */
    long getDocumentSize();

    /**
     * Returns the total execution time for index update operations.
     *
     * @return the execution time in milliseconds
     */
    long getExecuteTime();

    /**
     * Commits all pending index update operations to ensure data persistence.
     * This method should be called after all documents have been stored.
     */
    void commit();

        }

        @Override
        public long getDocumentSize() {
            return documentCount.get();
        }

        @Override
        public long getExecuteTime() {
            executeTime.set(System.currentTimeMillis() - startTime);
            return executeTime.get();
        }

        @Override
        public void commit() {
            committed.set(true);

    }

    // Fast mock implementations to minimize overhead

    private static class FastMockIndexUpdateCallback implements IndexUpdateCallback {
        @Override
        public long getExecuteTime() {
            return 100L;
        }

        @Override
        public long getDocumentSize() {
            return 10L;
        }

        @Override
        public void commit() {

    }

    /**
     * Returns the total execution time for all operations.
     *
     * @return the total execution time in milliseconds
     */
    @Override
    public long getExecuteTime() {
        return executeTime;
    }

    }

    @Override
    public long getDocumentSize() {
        return indexUpdateCallback.getDocumentSize();
    }

    @Override
    public long getExecuteTime() {
        return indexUpdateCallback.getExecuteTime();
    }

    /**
     * Sets the maximum size of the delete document cache.
     *
     * @param maxDeleteDocumentCacheSize the maximum cache size before batch deletion is triggered

        } catch (final InterruptedException e) {
            logger.warn("Interrupted index update.", e);
        }

        crawlingInfoHelper.putToInfoMap(Constants.WEB_FS_INDEX_EXEC_TIME, Long.toString(indexUpdater.getExecuteTime()));
        crawlingInfoHelper.putToInfoMap(Constants.WEB_FS_INDEX_SIZE, Long.toString(indexUpdater.getDocumentSize()));

        if (systemHelper.isForceStop()) {
            return;
        }

            logger.info("[EXEC TIME] crawling time: {}ms", execTime);
        }

        crawlingInfoHelper.putToInfoMap(Constants.DATA_INDEX_EXEC_TIME, Long.toString(indexUpdateCallback.getExecuteTime()));
        crawlingInfoHelper.putToInfoMap(Constants.DATA_INDEX_SIZE, Long.toString(indexUpdateCallback.getDocumentSize()));

        for (final String sid : sessionIdList) {
            // remove config

        indexUpdater.setCrawlerList(crawlerList);
        // Verify crawlerList was set (cannot access private field directly)

        // Test executeTime
        assertEquals(0L, indexUpdater.getExecuteTime());

        // Test documentSize
        assertEquals(0L, indexUpdater.getDocumentSize());
    }

    // Test setUncaughtExceptionHandler
    public void test_setUncaughtExceptionHandler() {