[jira] [Commented] (PHOENIX-3609) Detect and fix corrupted local index region during compaction

["Ankit Singhal (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-3609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15853641#comment-15853641 ] 

Ankit Singhal commented on PHOENIX-3609:
----------------------------------------

Thanks [~rajeshbabu] for the review. committed to master and 4.x branches.

> Detect and fix corrupted local index region during compaction
> -------------------------------------------------------------
>
>                 Key: PHOENIX-3609
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3609
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.8.0
>            Reporter: Ankit Singhal
>            Assignee: Ankit Singhal
>             Fix For: 4.10.0
>
>         Attachments: PHOENIX-3609.patch, PHOENIX-3609_v1.patch
>
>
> Local index regions can be corrupted when hbck is run to fix the overlap regions and directories are simply merged for them to create a single region.
> we can detect this during compaction by looking at the start keys of each store files and comparing prefix with region start key. if local index for the region is found inconsistent, we will read the store files of corresponding data region and recreate a data.



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