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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-3566) Improve drop local index performace
Date Thu, 05 Jan 2017 18:38:58 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15802139#comment-15802139
] 

James Taylor commented on PHOENIX-3566:
---------------------------------------

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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