protected long schedulerTime;

    @Override
    public void schedule(final LaCron cron) {
        schedulerTime = systemHelper.getCurrentTimeAsLong();
        scheduledJobService.start(cron);

        final String myName = fessConfig.getSchedulerTargetName();
        if (StringUtil.isNotBlank(myName)) {
            ComponentUtil.getComponent(JobLogBhv.class).queryDelete(cb -> {

                environment.put("OPENSEARCH_URL", SystemUtil.getSearchEngineHttpAddress());
            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();
            it.join(5000);

            final int exitValue = currentProcess.exitValue();

    public Map<String, String[]> getConditions() {
        return as;
    }

    @Override
    public int getStartPosition() {
        if (start == null) {
            start = ComponentUtil.getFessConfig().getPagingSearchPageStartAsInteger();
        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }
        return offset;

    protected long queryTime;

    // for testing
    protected QueryResponseList(final List<Map<String, Object>> documentList, final int start, final int pageSize, final int offset) {
        this.parent = documentList;
        this.offset = offset;
        this.start = start;
        this.pageSize = pageSize;
    }

								<button type="submit" class="btn btn-primary ${f:h(editableClass)}" name="upgradeFrom"
									value="<la:message key="labels.upgrade_start_button"/>"
								>
									<em class="fa fa-arrow-circle-right">
									<la:message key="labels.upgrade_start_button" />
								</button>
							</div>
						</div>
					</div>
				</la:form>
			</section>
		</div>

    @Execute
    public HtmlResponse index() {
        throw new UnsupportedOperationException();
    }

    // POST /api/admin/scheduler/{id}/start
    @Execute(urlPattern = "{}/@word")
    public JsonResponse<ApiResult> post$start(final String id) {
        scheduledJobService.getScheduledJob(id).ifPresent(entity -> {
            if (!entity.isEnabled() || entity.isRunning()) {

![Admin UI](https://fess.codelibs.org/_images/fess_admin_dashboard.png)

You can register crawling targets in the Admin UI on the (Web, File, Data Store) crawler configuration pages, and then start the Crawler manually on the [Scheduler page](https://fess.codelibs.org/14.12/admin/scheduler-guide.html).

## Migration from another search provider

Please see [MIGRATION.md](MIGRATION.md).

## Data Store

        final ProcessBuilder pb = new ProcessBuilder(cmdList);
        pbCall.accept(pb);
        destroyProcess(sessionId);
        JobProcess jobProcess;
        try {
            jobProcess = new JobProcess(pb.start(), bufferSize, outputCallback);
            destroyProcess(sessionId, runningProcessMap.putIfAbsent(sessionId, jobProcess));
            return jobProcess;
        } catch (final IOException e) {

    void jobLogTest() {
        logger.info("start jobLogTest");
        testReadJobLog();
        testDeleteJobLog();
    }

    @Test
    void crawlingInfoTest() {
        logger.info("start crawlingInfoTest");
        testReadCrawlingInfo();
        testDeleteCrawlingInfo();
    }

    @Test
    void failureUrlTest() {
        logger.info("start failureUrlTest");
        testReadFailureUrl();

    @ValidateTypeFailure
    public Integer start;

    @ValidateTypeFailure
    public Integer offset;

    @ValidateTypeFailure
    public Integer pn;

    @Size(max = 1000)
    public String sdh;

    @Size(max = 100)
    public String track_total_hits;

    // advance

    @Override
    public int getStartPosition() {
        if (start == null) {