Code review comment: Here are the suggestions for the code review:  1. Good Practice: You've evidently made this modification with consideration for the potential issues that can arise from having multiple HTTP clients on the classpath. It's impressive that you've refactored the set property into its function `setAWSHttpClient()` and put a comment describing what it's designed to resolve.  2. Comments: The addition of relevant comments in the function `setAWSHttpClient()` helps increase the comprehensibility of your code. This is a good practice, which makes maintaining the code easier in the future.  3. TODO Comment: The use of the "TODO" comment is noticeable. Following up such comments is crucial to ensure they don't get forgotten in long-term maintenance or refactoring efforts. While not strictly a code issue, this could be improved with the task tracking in a project management system if one is employed by your team.  4. Testing: From a code review perspective, it's not clear whether appropriate automated tests have been updated or created to account for these changes. The developer should always ensure their changes are covered by tests.  5. Thread Safety: It is important to notice that setting a system property might not be thread safe. If there are multiple threads executing `setAWSHttpClient()` simultaneously, it may lead to unpredictable results.  6. Code Placement: The `System.setProperty` was moved closer to the start of the program to ensure it executes before any calls to AWS SDK happen. This is a good move to prevent any conflicts with the different HTTP implementations being loaded onto the classpath.  7. Method naming: The method name `setAWSHttpClient()` could be improved for clarity. Consider renaming it to better express the action performed (e.g., `setDefaultAWSHttpClientToUrlConnection()`) if this indeed sets a default instance.  Please keep these points in mind while assessing this code revision beyond just these structural aspects of the code. Ultimately, the impact of these changes will depend on how well they address specific application requirements and handle potential sources of error.

Code under review:
private static void checkCommandLineOptions(CommandLineOptions cmdLineOpts) {
        if (cmdLineOpts.isVersion()) {
            System.out.println("Build version: " + Version.STARROCKS_VERSION);
            System.out.println("Commit hash: " + Version.STARROCKS_COMMIT_HASH);
            System.out.println("Build type: " + Version.STARROCKS_BUILD_TYPE);
            System.out.println("Build time: " + Version.STARROCKS_BUILD_TIME);
            System.out.println("Build user: " + Version.STARROCKS_BUILD_USER + "@" + Version.STARROCKS_BUILD_HOST);
            System.out.println("Java compile version: " + Version.STARROCKS_JAVA_COMPILE_VERSION);
            System.exit(0);
        } else if (cmdLineOpts.runBdbTools()) {
            
            BDBTool bdbTool = new BDBTool(BDBEnvironment.getBdbDir(), cmdLineOpts.getBdbToolOpts());
            if (bdbTool.run()) {
                System.exit(0);
            } else {
                System.exit(-1);
            }
        }

        
    }

Line commented on: System.out.println("Build version: " + Version.STARROCKS_VERSION);

Revised code:
private static void checkCommandLineOptions(CommandLineOptions cmdLineOpts) {
        if (cmdLineOpts.isVersion()) {
            System.out.println("Build version: " + Version.STARROCKS_VERSION);
            System.out.println("Commit hash: " + Version.STARROCKS_COMMIT_HASH);
            System.out.println("Build type: " + Version.STARROCKS_BUILD_TYPE);
            System.out.println("Build time: " + Version.STARROCKS_BUILD_TIME);
            System.out.println("Build user: " + Version.STARROCKS_BUILD_USER + "@" + Version.STARROCKS_BUILD_HOST);
            System.out.println("Java compile version: " + Version.STARROCKS_JAVA_COMPILE_VERSION);
            System.exit(0);
        } else if (cmdLineOpts.runBdbTools()) {
            
            BDBTool bdbTool = new BDBTool(BDBEnvironment.getBdbDir(), cmdLineOpts.getBdbToolOpts());
            if (bdbTool.run()) {
                System.exit(0);
            } else {
                System.exit(-1);
            }
        }

        
    }