A number of documents are clear that it's possible to upgrade from one ES version to the next, but not downgrade. I'm wondering what the causes of this are? I assume there's a necessary forwards compatibility guarantee between the files that are kept on disk which is not currently met. Is this pure…

What makes ES not support rollbacks?

Christian_Dahlqvist (Christian Dahlqvist) August 18, 2020, 11:04am 2

I believe this was recently answered in this thread.

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