Hi, I'm using 0.19.3 and it seems quite ancient version now :slight_smile: So, I'm thinking of upgrade to the latest version 0.20.2. Also, thinking of upgrade java6 to java7. I have 19 data nodes and a bunch of non-data client nodes. Can I upgrade partially? For example, all clients and some o…

Partial upgrade possible?

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Partial upgrade possible?

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