This plugin will help you to check whether you can upgrade directly to the next major version of Elasticsearch, or whether you need to make changes to your data and cluster before doing so.
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Plugin doesn't detect _id field for .percolator type documents #56
I am upgrading ES from 1.6.1 to 2.1.2 and it seems that migration plugin is just giving "advisory" note if there is
_id
field present in.percolator
document. Instead it should throw a red signal "You cannot upgrade without fixing this problem". Created from discussion group: https://discuss.elastic.co/t/snapshot-restore-failing-while-restoring-indexes-from-es-1-6-1-to-es-2-1-2/49197Let me know if any other information or help is required.