fe连接池异常，日志很多kill query timeout，版本3.0.3

[hnie2010]

哪位高人帮忙瞧一瞧，是什么原因，怎么避免！连接很多，曾经出现多所有查询都hang住的情况！
2025-03-04 11:58:50,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.killByTimeout():980] kill time out query, remote: 10.221.1.106:48948, at the same time kill c
onnection is false, connection type: MYSQL, connectionId: 8038
2025-03-04 11:58:50,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.checkTimeout():1019] kill query timeout, remote: 10.221.7.50:35388, query timeout: 50000, que
ry id: TUniqueId(hi:4994782557913631267, lo:-5741566022815689534)
2025-03-04 11:58:50,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.killByTimeout():980] kill time out query, remote: 10.221.7.50:35388, at the same time kill co
nnection is false, connection type: MYSQL, connectionId: 8151
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.checkTimeout():1019] kill query timeout, remote: 10.221.1.106:42018, query timeout: 50000, qu
ery id: TUniqueId(hi:4307247712773816650, lo:-6909497847364570807)
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.killByTimeout():980] kill time out query, remote: 10.221.1.106:42018, at the same time kill c
onnection is false, connection type: MYSQL, connectionId: 7846
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.checkTimeout():1019] kill query timeout, remote: 10.221.1.106:48948, query timeout: 50000, qu
ery id: TUniqueId(hi:9059590700894732387, lo:-6745521100139521548)
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.killByTimeout():980] kill time out query, remote: 10.221.1.106:48948, at the same time kill c
onnection is false, connection type: MYSQL, connectionId: 8038
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.checkTimeout():1019] kill query timeout, remote: 10.221.7.50:35388, query timeout: 50000, que
ry id: TUniqueId(hi:4994782557913631267, lo:-5741566022815689534)
2025-03-04 11:58:51,340 WARN (connect-scheduler-check-timer-0|145) [ConnectContext.killByTimeout():980] kill time out query, remote: 10.221.7.50:35388, at the same time kill co
nnection is false, connection type: MYSQL, connectionId: 8151
2025-03-04 11:58:51,462 WARN (mysql-nio-pool-246|145) [ConnectContext.kill():954] kill query from 10.221.15.135:42968, kill MYSQL connection: false
2025-03-04 11:58:51,463 WARN (mysql-nio-pool-246|145) [MysqlConnectProcessor.processOnce():399] Null packet received from network. remote: 10.221.15.135:57916
2025-03-04 11:58:51,463 WARN (mysql-nio-pool-246|145) [ReadListener.lambda$handleEvent$0():60] Exception happened in one session(org.apache.doris.qe.ConnectContext@38e0a2ae).
java.io.IOException: Error happened when receiving packet.
at org.apache.doris.qe.MysqlConnectProcessor.processOnce(MysqlConnectProcessor.java:400) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.mysql.ReadListener.lambda$handleEvent$0(ReadListener.java:52) ~[doris-fe.jar:1.2-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.lang.Thread.run(Thread.java:833) ~[?:?]