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https://issues.apache.org/jira/browse/PHOENIX-4752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16488247#comment-16488247
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Josh Elser commented on PHOENIX-4752:
-------------------------------------
[~stack] fyi
> Phoenix with Procedure v2
> -------------------------
>
> Key: PHOENIX-4752
> URL: https://issues.apache.org/jira/browse/PHOENIX-4752
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Karan Mehta
> Priority: Major
>
> [Procedure Framework
> (Pv2)|https://docs.google.com/document/d/1QLXlVERKt5EMbx_EL3Y2u0j64FN-_TrVoM5WWxIXh6o/edit#heading=h.df9krsl9k16]
> framework in HBase (available from HBase 1.1 and up) allows users to build
> multi step procedures with built in fault tolerance. The framework was
> originally inspired from Fault tolerant executor (FATE) framework from Apache
> Accumulo. This is essentially achieved by declaring the procedure as a series
> of idempotent execution functions and providing persistence for the result of
> each execution. In case of failures, the new owner can first determine the
> in-flight procedures and take on its execution. The framework also allows to
> build a tree (DAG) of procedures i.e. a procedure can have one or more child
> procedures. The next step of procedure will only be executed once all its
> child process have successfully completed execution. This can be leveraged by
> Apache Phoenix for several of its functions.
> I created a doc [Phoenix with
> Procedurev2|https://docs.google.com/document/d/1vmaK7Yz7TTbzuBHPR09d4LqtfAj6tkPT0-DjS6nQ6QA/edit]
> to consolidate some of the use cases. Please provide comments / ideas to
> improve upon it. Also comment on the feasibility vs usefulness of doing it.
> [~elserj] [~giacomotaylor] [~mbertozzi]
> FYI [~apurtell] [~tdsilva]
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