I've tried asking on irc but can't get anybody to respond. I'm curious what happens when you decomission a node and later bring it back online.
For example, say you had a node and you decommission it, allowing all the indexes to be replicated elsewhere. Then you used scan / scroll to remove and update documents from indices on the cluster. Then finally you bring the decomissioned node back online. Will the indices in the recommissioned node be updated / discarded / validated? Or should you remove the data off the node when decommissioning it?
Does the version of Elasticsearch have an impact on this?