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https://issues.apache.org/jira/browse/OAK-6820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16205417#comment-16205417
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Chetan Mehrotra commented on OAK-6820:
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Applied the patch with 1812242
> Implement support for disabling indexes which are replaced with newer index
> ---------------------------------------------------------------------------
>
> Key: OAK-6820
> URL: https://issues.apache.org/jira/browse/OAK-6820
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: indexing
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Fix For: 1.8
>
> Attachments: OAK-6820-v1.patch, OAK-6820-v2.patch
>
>
> For upgrade case in many applications older index type is set to {{disabled}}
> when new index is provisioned. If the new index is async then it would take
> some time for reindex and till then any query which used to make use of old
> index would end up traversing the repository
> To avoid such a scenario we should only mark older index as "disabled" only
> if the newer index is reindex.
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