为了更快的定位您的问题，请提供以下信息，谢谢
【详述】问题详细描述
【背景】做过哪些操作？
【业务影响】
【是否存算分离】
【StarRocks版本】3.1.10
【集群规模】3fe（1 follower+2observer）+6be（fe与be混部）
【机器信息】CPU虚拟核/内存/网卡，例如：32C/64G/万兆
warn 日志如下：
2024-04-02 15:35:01.837+08:00 WARN (starrocks-mysql-nio-pool-843|26417) [ReadListener.lambda$handleEvent$0():81] Exception happened in one session(com.starrocks.mysql.nio.NConnectContext@3885545c).
java.nio.BufferUnderflowException: null
at java.nio.Buffer.nextGetIndex(Buffer.java:500) ~[?:1.8.0_191]
at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:135) ~[?:1.8.0_191]
at com.starrocks.mysql.MysqlProto.readByte(MysqlProto.java:312) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.MysqlProto.readInt1(MysqlProto.java:316) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.MysqlProto.readVInt(MysqlProto.java:342) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.MysqlProto.readLenEncodedString(MysqlProto.java:375) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.MysqlChangeUserPacket.readFrom(MysqlChangeUserPacket.java:88) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.MysqlProto.changeUser(MysqlProto.java:263) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.handleChangeUser(ConnectProcessor.java:135) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.dispatch(ConnectProcessor.java:495) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.processOnce(ConnectProcessor.java:774) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:69) ~[starrocks-fe.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[?:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[?:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_191]