Github user ChinmaySKulkarni commented on the issue:
https://github.com/apache/phoenix/pull/401
@vincentpoon the problem with that approach is that there are certain
fields that are set inside `init` and changing those fields would require us to
change other fields, for example, changing the columns would require us to
recompute the `estimatedSize`, `pkColumns`, etc. so it's not sufficient to
return the builder and then just set whatever are the new properties. On top of
this, the user would need to keep track of the fact that `init` needs to be
called again after some fields are changed, which is error-prone. I feel that
we should keep this abstracted away from the user. Let me know what you think.
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