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https://issues.apache.org/jira/browse/PHOENIX-6190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ankit Singhal updated PHOENIX-6190:
-----------------------------------
Fix Version/s: (was: 4.16.0)
(was: 5.1.0)
> Race condition in view creation may allow conflicting changes for pre-4.15
> clients and for scenarios with phoenix.allow.system.catalog.rollback=true
> ----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-6190
> URL: https://issues.apache.org/jira/browse/PHOENIX-6190
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 5.0.0, 4.15.0
> Reporter: Chinmay Kulkarni
> Priority: Major
>
> For pre-4.15 clients and in scenarios where
> phoenix.allow.system.catalog.rollback=true, we have to block adding/dropping
> a column to/from a parent table/view as we no longer lock the parent on the
> server side while creating a child view to prevent conflicting changes. This
> is handled on the client side from 4.15 onwards.
> However, there is a slight race condition here where a view may be created
> between the time we find all children of the parent and the time we do this
> check (see
> [this|https://github.com/apache/phoenix/blob/264310bd1e6c14996c3cfb11557fc66a012cb01b/phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java#L2592]).
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