You may need to increase this in many places, as the ZK docs mention:
> This option can only be set as a Java system property.
There is no zookeeper prefix on it. It specifies the maximum
size of the data that can be stored in a znode. The default is
0xfffff, or just under 1M. If this option is changed, the system
property must be set on all servers and clients otherwise
problems will arise. This is really a sanity check. ZooKeeper is
designed to store data on the order of kilobytes in size.
Btw,
is your ZK cluster shared with other systems besides Druid? Druid these
days does not use ZK for much beyond service discovery and leader
election. It seems strange that Druid itself might write a znode that
large. I wonder if it came from somewhere else.
Gian