if (!ignoreException) {
                throw e;
            }
        } catch (final Exception e) {
            if (!ignoreException) {
                throw new CrawlerSystemException("Could not stop a process.", e);
            }
        }
    }

    /**
     * Delays the crawling process before processing a URL.
     */
    protected abstract void delayBeforeProcessing();

    /**

     *
     * @return whether the task is stopped
     */
    public boolean isStopped() {
        return status == STOPPED;
    }

    /**
     * Stops the timer.
     */
    public void stop() {
        if (status != ACTIVE) {
            throw new ClIllegalStateException(String.valueOf(status));
        }
        status = STOPPED;
    }

    /**
     * Restarts the timer.
     */

                WitnessUnregisterResponse response = rpcClient.unregister(request);

                if (response != null && response.isSuccess()) {
                    // Stop async notification monitoring
                    stopAsyncNotificationMonitoring(registration.getRegistrationId());

                    registrations.remove(registration.getRegistrationId());

     *
     * @param index the name of the index to scroll through
     * @param callback the function to apply to each search hit, returning true to continue or false to stop
     * @return the number of documents processed
     */
    public static long scroll(final String index, final Function<SearchHit, Boolean> callback) {

            when(mockFile.getType()).thenReturn(SmbConstants.TYPE_NAMED_PIPE);

            // Cause send to throw to stop execution so we can verify arguments
            doAnswer(inv -> {
                throw new SmbException("stop");
            }).when(mockTree)
                    .send(any(jcifs.internal.CommonServerMessageBlockRequest.class),

            fail("Expected CrawlerSystemException to be thrown");
        } catch (final CrawlerSystemException e) {
            // Expected
            assertTrue(e.getMessage().contains("Could not stop a process"));
        }
    }

    /**
     * Test CrawlerSystemException is re-thrown when ignoreException = false
     */
    public void test_crawlerSystemExceptionRethrown() {

set FESS_MAX_MEM=1g
)

if NOT "%FESS_HEAP_SIZE%" == "" (
set FESS_MIN_MEM=%FESS_HEAP_SIZE%
set FESS_MAX_MEM=%FESS_HEAP_SIZE%
)

REM min and max heap sizes should be set to the same value to avoid
REM stop-the-world GC pauses during resize, and so that we can lock the
REM heap in memory on startup to prevent any of it from being swapped
REM out.
set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Xms%FESS_MIN_MEM% -Xmx%FESS_MAX_MEM%

#FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Djavax.net.ssl.trustStore=/tech/elastic/config/truststore.jks"
#FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Djavax.net.ssl.trustStorePassword=changeit"

# min and max heap sizes should be set to the same value to avoid
# stop-the-world GC pauses during resize, and so that we can lock the
# heap in memory on startup to prevent any of it from being swapped
# out.
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Xms${FESS_MIN_MEM}"

    }

    /**
     *  Evaluate XPath string to an XObject.
     *  XPath namespace prefixes are resolved from the namespaceNode.
     *  The implementation of this is a little slow, since it creates
     *  a number of objects each time it is called.  This could be optimized
     *  to keep the same objects around, but then thread-safety issues would arise.
     *

    }

    /**
     * Get the name of this data store.
     * @return The name of this data store.
     */
    protected abstract String getName();

    @Override
    public void stop() {
        alive = false;
    }

    @Override
    public void store(final DataConfig config, final IndexUpdateCallback callback, final DataStoreParams initParamMap) {