部署otter，启动node的时候一直报错：
2023-03-21 10:39:24.615 [main-SendThread(10.224.250.251:8080)] WARN org.apache.zookeeper.ClientCnxn - Session 0x0 for server 121.121.121.121/121.121.121.121:8080, unexpected error, closing socket connection and attempting reconnect
java.io.IOException: Packet len1213486160 is out of range!
at org.apache.zookeeper.ClientCnxnSocket.readLength(ClientCnxnSocket.java:112) ~[zookeeper-3.4.5.jar:3.4.5-1392090]
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:79) ~[zookeeper-3.4.5.jar:3.4.5-1392090]
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:355) ~[zookeeper-3.4.5.jar:3.4.5-1392090]
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068) ~[zookeeper-3.4.5.jar:3.4.5-1392090]
对于：
java.io.IOException: Packet len1213486160 is out of range!
一开始以为是数据包太大，配置参数不对，做了各种调试尝试未果。
后来发现是端口配置错误了，并非8080：
Session 0x0 for server 121.121.121.121/121.121.121.121:8080
所以。如果packet len1213486160 is out of range可能是zk地址端口写错了，检查配置；其他数字的话，需要设置jute.maxbuffer参数来解决
标签：java,zookeeper,len1213486160,Packet,3.4,apache,121.121,out From： https://www.cnblogs.com/abclife/p/17239369.html