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https://issues.apache.org/jira/browse/PHOENIX-2885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378229#comment-15378229
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James Taylor commented on PHOENIX-2885:
---------------------------------------

bq. I think as long as we get the cache refresh out of the synchronous path for 
each query we're good
Agreed. Having a reasonable default and auto detecting the entity not found 
cases (the most common case IMO) is a better default behavior. The drop cases 
would worst case return data that is going to be deleted soon (until the cache 
refresh). Seems reasonable to me.

> Refresh client side cache before throwing not found exception
> -------------------------------------------------------------
>
>                 Key: PHOENIX-2885
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2885
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>             Fix For: 4.9.0
>
>
> With the increased usage of the UPDATE_CACHE_FREQUENCY property to reduce 
> RPCs, we increase the chance that a separate client attempts to access a 
> column that doesn't exist on the cached entity. Instead of throwing in this 
> case, we can update the client-side cache. This works well for references to 
> entities (columns, tables) that don't yet exist. For entities that *do* 
> exist, we won't detect that they've been deleted.



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