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https://issues.apache.org/jira/browse/PHOENIX-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15802139#comment-15802139
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James Taylor commented on PHOENIX-3566:
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Take a look at PHOENIX-3262 too. It's an interesting idea to improve the
dropping of local indexes.
> Improve drop local index performace
> -----------------------------------
>
> Key: PHOENIX-3566
> URL: https://issues.apache.org/jira/browse/PHOENIX-3566
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Rajeshbabu Chintaguntla
> Assignee: Rajeshbabu Chintaguntla
> Fix For: 4.10.0
>
>
> When we drop local index we need to scan whole data table and in the
> coprocessor prepare index deletes and write back to the same table which adds
> lot of overhead to the system. We can improve the performance by just
> dropping meta data so during compaction we can check we can just write the
> existing indexes data back.
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