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Zookeeper >> mail # user >> Backup/restore of an emsemble

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Backup/restore of an emsemble
A while ago, Jack Ma asked this question:

I wonder if there were any helpful suggestions that did not go into the
mailing list.

I am mostly concerned about restoring data in a Zookeeper ensemble.

There is no document at the project web-site that would explain the restore
procedure for a distributed deployment. The home-grown solution that
involves stopping the whole cluster, wiping out databases on all but one
server, restoring the database on one server, and then bring up the cluster
and pray that the populated server becomes the leader and populates the
cluster. Such solution seems to be too error-prone.

Does anyone have recommendations on how to make it robust?

Maybe there is a way to force-populate the ensemble remotely?