I am planning to do an upgrade for our current Elasticsearch cluster which
is using version 0.90.0. I am thinking to add the new version (v0.90.12) of
ES nodes ( master nodes first and then data nodes ) to the cluster and take
the old version of nodes out of cluster.
Is there any known issue with these two versions (v0.90.0 and v0.90.12) of
elasticsearch working with each other in the same cluster?
I checked the release notes and found some breaking changes from 0.90.0 to
0.90.12. Will these breaking changes cause any problem with this upgrade ?
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