因为某些误操作，导致znode节点上的数据太大，超过长度，这时候要ls或者rmr就会报错

大概像下图：

Packet len4807928 is out of range

在外网有这样的文章：

https://stackoverflow.com/questions/10249579/zookeeper-cli-failing-ioexception-packet-len12343123123-is-out-of-range

这是zookeeper的源码：

707         void readLength() throws IOException {
708             int len = incomingBuffer.getInt();
709             if (len < 0 || len >= packetLen) {
710                 throw new IOException("Packet len" + len + " is out of range!");
711             }
712             incomingBuffer = ByteBuffer.allocate(len);
713         }

$JAVA "-Dzookeeper.log.dir=${ZOO_LOG_DIR}" "-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}" \
 "-Djute.maxbuffer=49107800" -cp "$CLASSPATH" $CLIENT_JVMFLAGS $JVMFLAGS \
 org.apache.zookeeper.ZooKeeperMain "$@"

说的是要在你的zkCli.sh里面添加上

 "-Djute.maxbuffer=50111000"  这一行，相当于增加他的最大容量，然后再去删除或者ls查看你的节点就可以了。

$JAVA "-Dzookeeper.log.dir=${ZOO_LOG_DIR}" "-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}" \
 "-Djute.maxbuffer=49107800" -cp "$CLASSPATH" $CLIENT_JVMFLAGS $JVMFLAGS \
 org.apache.zookeeper.ZooKeeperMain "$@"