I'm not familiar with curator, can curator only watch a particular leaf path? Thus we can implement a simpler Announcer for these two paths to reduce watch number in zookeeper to avoid zk OOM.

It sounds possible, but I wonder what your solution is. Would you elaborate more details? What is the simpler implementation of Announcer you think?

My thought is that only watch the leaf path instead of watching all the child paths under the base path.
Rather than use childEvent, watch the path itself, I don't know whether it is possible, I'm not familiar with curator.

I also encountered this problem, how did you solve it?

What I want is to delete the directory under discovery and delete it after the task is finished.

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