private static void constructCustomSessionPool() {
    sessionPool =
        new SessionPool.Builder()
            .host("127.0.0.1")
            .port(6667)
            .user("root")
            .password("root")
            .maxSize(3)
            .build();
  }
Build a custom SessionPool for this example
example/session/src/main/java/org/apache/iotdb/SessionPoolExample.java