As for all updates, you should consider that if you are unable to use the new version for whatever reason, there is no guarantee that you can put the data back to the old version.
So please consider a backup of your data, and do not forget to read the changelog / release notes of the new version how to update. Jörg -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoFyyjqepfRHiHDe%3DpvwwNE2fjqpc5g%2BmZw2q8thsz4R7Q%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
