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https://issues.apache.org/jira/browse/PHOENIX-4344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665693#comment-16665693
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Lars Hofhansl commented on PHOENIX-4344:
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An interesting observation is of course that if there a global _immutable_
index the delete *has* to happen from the client, and for globalĀ _mutable_
index the delete will incur a server-server roundtrip. So this really only
works well with local indexes.
> MapReduce Delete Support
> ------------------------
>
> Key: PHOENIX-4344
> URL: https://issues.apache.org/jira/browse/PHOENIX-4344
> Project: Phoenix
> Issue Type: New Feature
> Affects Versions: 4.12.0
> Reporter: Geoffrey Jacoby
> Assignee: Geoffrey Jacoby
> Priority: Major
>
> Phoenix already has the ability to use MapReduce for asynchronous handling of
> long-running SELECTs. It would be really useful to have this capability for
> long-running DELETEs, particularly of tables with indexes where using HBase's
> own MapReduce integration would be prohibitively complicated.
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