I have a question about upgrading: should you turn off shard reallocation
before shutting down each server?
I was reading somewhere (but can't find where) that shutting down a node in
the cluster reassigns all the shards immediately and then bringing the node
back up causes another flurry of reassignments. This is the behaviour I
If I turn off shard reallocation before shutting down the server, upgrade,
restart, then turn on shard reallocation, then I see the shards basically
snap back to their old server and the whole process seems to proceed much
So, is this how I should do a rolling upgrade? If so, should I work on
building such a thing into the deb package, shutdown api, or something else?
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