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https://issues.apache.org/jira/browse/DIRSERVER-1968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13959635#comment-13959635
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Kiran Ayyagari commented on DIRSERVER-1968:
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Nope, it doesn't delete and re-create, instead client does a diff and updates
those attributes that were changed or are newly added.
> [replication] Avoid updating all the index when we have an entry modification
> -----------------------------------------------------------------------------
>
> Key: DIRSERVER-1968
> URL: https://issues.apache.org/jira/browse/DIRSERVER-1968
> Project: Directory ApacheDS
> Issue Type: Improvement
> Affects Versions: 2.0.0-M16
> Reporter: Emmanuel Lecharny
> Fix For: 2.0.0-RC1
>
>
> Currently, when an entry is being modified and replicated, the receiving
> replica will simply delete the existing entry and re-create it, updating all
> the indexes in the process.
> We can compute the attribute being updated and apply the modification o the
> impacted indexes, leaving the other ones unchanged.
> That would save a lot of CPU and disk access.
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