我花了三天时间启动ES源码这件事

Elasticsearch version (bin/elasticsearch --version): \elasticsearch-8.1.0
JVM version (java -version): openjdk version jdk-17.0.2
Windows environment : Windows 11
idea：2021.3

启动org.elasticsearch.bootstrap.Elasticsearch
/**
     * Main entry point for starting elasticsearch
     */
    public static void main(final String[] args) throws Exception {
        overrideDnsCachePolicyProperties();
        org.elasticsearch.bootstrap.Security.prepopulateSecurityCaller();

        /*
         * We want the JVM to think there is a security manager installed so that if internal policy decisions that would be based on the
         * presence of a security manager or lack thereof act as if there is a security manager present (e.g., DNS cache policy). This
         * forces such policies to take effect immediately.
         */
        org.elasticsearch.bootstrap.Security.setSecurityManager(new SecurityManager() {

            @Override
            public void checkPermission(Permission perm) {
                // grant all permissions so that we can later set the security manager to the one that we want
            }

        });
        LogConfigurator.registerErrorListener();
        final Elasticsearch elasticsearch = new Elasticsearch();
        int status = main(args, elasticsearch, Terminal.DEFAULT);
        if (status != ExitCodes.OK) {
            printLogsSuggestion();
            exit(status);
        }
    }

ERROR: the system property [es.path.conf] must be set