joinThread(q1x);
        interruptThreadSafely(q20);
        joinThread(q20);
    }


    private static void interruptThreadSafely ( QueryThread thread ) {
        try {
            thread.interrupt();
        }
        catch ( SecurityException e ) {
            e.printStackTrace();
        }
    }


    private static void joinThread ( Thread thread ) {
        try {

			</plugin>
			<!-- rpm -->
			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>rpm-maven-plugin</artifactId>
				<configuration>
					<distribution>Fess</distribution>
					<group>Application/Internet</group>
					<packager>CodeLibs</packager>
					<prefix>/usr</prefix>
					<needarch>noarch</needarch>
					<targetOS>linux</targetOS>
					<changelogFile>src/changelog</changelogFile>
					<defineStatements>

            executor.awaitTermination(executorTerminationTimeout, TimeUnit.SECONDS);
        } catch (final InterruptedException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to interrupt executor.", e);
            }
        } finally {
            executor.shutdownNow();
        }

        if (!deleteUrlList.isEmpty()) {
            deleteDocuments();
        }

            exitCode = Constants.EXIT_FAIL;
        } finally {
            if (commandThread != null && commandThread.isAlive()) {
                commandThread.interrupt();
            }
            if (systemMonitorTask != null) {
                systemMonitorTask.cancel();
            }
            if (hotThreadMonitorTask != null) {
                hotThreadMonitorTask.cancel();

            }
        }, "ThumbnailGenerator");
        thumbnailQueueThread.start();
    }

    @PreDestroy
    public void destroy() {
        generating = false;
        thumbnailQueueThread.interrupt();
        try {
            thumbnailQueueThread.join(10000);
        } catch (final InterruptedException e) {
            logger.warn("Thumbnail thread is timeouted.", e);
        }

        if (jobProcess != null) {
            final InputStreamThread ist = jobProcess.getInputStreamThread();
            try {
                ist.interrupt();
            } catch (final Exception e) {
                logger.warn("Could not interrupt a thread of an input stream.", e);
            }

            final CountDownLatch latch = new CountDownLatch(3);
            final Process process = jobProcess.getProcess();

                    this.userAddresses = new ArrayList<>();
                    if ( addressType.getValue().intValue() == KerberosConstants.AF_INTERNET ) {
                        InetAddress userAddress = null;
                        try {
                            userAddress = InetAddress.getByAddress(addressOctets.getOctets());
                        }

            }
        }
    }

    /**
     * 処理を停止します。
     */
    public synchronized void stop() {
        if (thread != null) {
            thread.interrupt();
            thread = null;
            if (logger.isDebugEnabled()) {
                logger.debug("TimeoutManager stopped.");
            }
        }
    }

    /**
     * スレッドに割り込みを行い、終了するまで待機します。

                try {
                    synchronized ( lock ) {
                        lock.wait(1000);
                    }

                    Thread.sleep(100);
                    t.interrupt();
                }
                catch ( InterruptedException e ) {
                    e.printStackTrace();
                }
            }
        });

        try {

            throw new CommandExecutionException("Process terminated.", e);
        } finally {
            if (mt != null) {
                mt.setFinished(true);
                try {
                    mt.interrupt();
                } catch (final Exception e) {
                    // ignore
                }
            }
            if (currentProcess != null) {
                try {