当我试图运行我的java应用程序，它试图连接到cassandra时，我得到以下异常：

com.datastax.oss.driver.api.core.DriverTimeoutException: query 'SELECT * FROM system.local' timed out after PT0.5S

    DriverConfigLoader configBuilder = DriverConfigLoader.programmaticBuilder()
                .withClass(DefaultDriverOption.AUTH_PROVIDER_CLASS, PlainTextAuthProvider.class)
                .withString(DefaultDriverOption.AUTH_PROVIDER_USER_NAME, user)
                .withString(DefaultDriverOption.AUTH_PROVIDER_PASSWORD, pass)
                .withBoolean(DefaultDriverOption.CONNECTION_WARN_INIT_ERROR, false)
                .withInt(DefaultDriverOption.CONNECTION_MAX_REQUESTS, 32768)
                .withDuration(DefaultDriverOption.REQUEST_TIMEOUT, Duration.ofSeconds(30))
                .withDuration(DefaultDriverOption.CONNECTION_INIT_QUERY_TIMEOUT, Duration.ofSeconds(10)).build();

        try {
            cqlSession = CqlSession.builder().addContactPoints(hostsList).withKeyspace(keyspace)
                    .withLocalDatacenter(dataCenter).withConfigLoader(configBuilder).build();
        } catch (Exception e) {
            logger.error("CassandraConfig >> Unable to connect to database {}", e);
        }