assertEquals(8, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "9.0.4");
        assertEquals(9, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "10.0.1");
        assertEquals(10, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "11.0.1");
        assertEquals(11, JvmUtil.getJavaVersion());
    }

    @Test

     *
     * @return interface score
     */
    public int getScore() {
        int score = linkSpeed; // Base score is link speed

        if (rssCapable)
            score += 1000; // Prefer RSS-capable
        if (rdmaCapable)
            score += 2000; // Prefer RDMA-capable
        // Note: No IPv4 preference bonus to keep base score equal to link speed

        return score;
    }

    /** Working directory for command execution. */
    protected File workingDirectory = null;

    /** Maximum number of output lines to capture. */
    protected int maxOutputLine = 1000;

    /** Command execution timeout in milliseconds. */
    protected long executionTimeout = 30L * 1000L; // 30sec

    /** Character encoding for command output. */

        if (valueSeparator.length() > 0) {
            final String[] values = rolesStr.split(valueSeparator);
            if (maxAge > 0) {
                try {
                    final long time = getCurrentTime() / 1000 - Long.parseLong(values[0]);
                    if (time > maxAge || time < 0) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("role info is expired: {} > {}", time, maxAge);

            assertTrue("Should find custom thread in dump", customThreadFound.get() > 0);

        } finally {
            latch.countDown();
            customThread.join(1000); // Wait up to 1 second for thread to finish
        }
    }

    @Test
    public void test_writeThreadDump_fileContent() throws IOException {

    }

    // Test with rapid config changes
    @Test
    public void test_rapidConfigChanges() {
        for (int i = 0; i < 50; i++) {
            final int adjustment = i * 1000;
            FessConfig rapidConfig = new FessConfig.SimpleImpl() {
                private static final long serialVersionUID = 1L;

                @Override
                public String getTimeAdjustTimeMillis() {

            public int getNumberOfInFlightFetch() {
                return 0;
            }

            @Override
            public double getActiveShardsPercent() {
                return 100.0;
            }
        };
    }

    // Helper method to create test FessConfig
    private FessConfig createTestFessConfig() {
        return new TestFessConfig();
    }

                                               value="${f:h(numOfThread)}" class="form-control"
                                               min="1" max="1000">
                                    </div>
                                </div>
                                <div class="form-group row">

            message.setClientComputerName(context.getConfig().getNetbiosHostname());
            message.setFlags(request.getFlags());
            message.setTimeout((int) (context.getConfig().getWitnessRegistrationTimeout() / 1000));

            // Send the RPC request
            rpcHandle.sendrecv(message);

            // Create response from RPC message results
            WitnessRegisterResponse response = new WitnessRegisterResponse();

         * that this will suffice. I have not even benchmarked with different size limits.
         */
        if (validClasses.size() > 1000) {
          validClasses.clear();
        }

        validClasses.add(new WeakReference<Class<? extends Exception>>(exceptionClass));
      }
    }

    /**