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https://issues.apache.org/jira/browse/PHOENIX-5025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16719750#comment-16719750
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Kadir OZDEMIR commented on PHOENIX-5025:
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[~ckulkarni], I have submitted an addendum patch to remove Java 8 specific
APIs. I also noticed that the previous patch did not set SCN on the connection
that identifies the views. The current patch uses two connections, one with SCN
to identify orphan views and links and one without setting SCN to remove these
orphan objects. Again, we need one patch for all the branches as before. Please
let me know if you have any questions. [~apurtell] and [~jamestaylor], thank
you for commenting on this issue.
> Tool to clean up orphan views
> -----------------------------
>
> Key: PHOENIX-5025
> URL: https://issues.apache.org/jira/browse/PHOENIX-5025
> Project: Phoenix
> Issue Type: New Feature
> Reporter: Kadir OZDEMIR
> Assignee: Kadir OZDEMIR
> Priority: Major
> Fix For: 5.0.0
>
> Attachments: PHOENIX-5025.master.0001.patch,
> PHOENIX-5025.master.0002.patch, PHOENIX-5025.master.patch
>
>
> A view without its base table is an orphan view. Since views are virtual
> tables and their data is stored in their base tables, they are useless when
> they become orphan. A base table can have child views, grandchild views and
> so on. Due to some reasons/bugs, when a base table was dropped, its views
> were not not properly cleaned up in the past. For example, the drop table
> code did not support cleaning up grandchild views. This has been recently
> fixed by PHOENIX-4764. Although PHOENIX-4764 prevents new orphan views due to
> table drop operations, it does not clean up existing orphan views. It is also
> believed that when the system catalog table was split due to a bug in the
> past, it also contributed to creating orphan views as Phoenix did not support
> splittable system catalog. Therefore, Phoenix needs a tool to clean up orphan
> views.
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