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https://issues.apache.org/jira/browse/PHOENIX-2968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15317129#comment-15317129
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James Taylor commented on PHOENIX-2968:
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I don't understand this one. The degradation is due to the extra {{ALTER VIEW}}
call. Is an acceptable solution to just not make that call since it's not
needed? Or are you asking to optimize the {{ALTER VIEW}} call?
> Reduce alter statement RPC when table/view is set with APPEND_ONLY_SCHEMA and
> high value for UPDATE_CACHE_FREQUENCY
> -------------------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-2968
> URL: https://issues.apache.org/jira/browse/PHOENIX-2968
> Project: Phoenix
> Issue Type: Bug
> Reporter: Mujtaba Chohan
> Assignee: James Taylor
> Labels: Argus
>
> View is created with {{CREATE VIEW IF NOT EXISTS ... APPEND_ONLY_SCHEMA =
> true, UPDATE_CACHE_FREQUENCY=900000}}
> If {{ALTER VIEW <VIEW_NAME> ADD IF NOT EXISTS MYCOL VARCHAR}} is executed
> before each upsert statement then performance for each 1K batch upsert
> degrades by ~40X (50ms for 1K batch without alter statement vs 2300ms with
> alter statement)
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