Is it use open source Elasticsearch 7.10.2 in production environment?
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It's not clear what you are asking sorry.
yes, you can use v7.10.2 in pro env, and you can use GET _license API to get your license.
The default is the basic version
There is an open source distribution available up to 7.10, but be aware this is a dead end that it is no longer supported or updated. Newer versions are available with a free basic license that can be used in production although there are some limitations.
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