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https://issues.apache.org/jira/browse/DIRSERVER-1477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lecharny updated DIRSERVER-1477:
-----------------------------------------
Component/s: search
index
> Add an extended operation to re-index an attribute
> --------------------------------------------------
>
> Key: DIRSERVER-1477
> URL: https://issues.apache.org/jira/browse/DIRSERVER-1477
> Project: Directory ApacheDS
> Issue Type: New Feature
> Components: index, search
> Reporter: Emmanuel Lecharny
> Priority: Major
> Fix For: 2.0.0-RC2
>
>
> We need a way to re-index an attribute live. The best solution would be to
> add an extended operation to do so.
> The problem we will have with this approach is that we should deal with the
> ongoing operations : search, add, delete, etc... while the index is being
> rebuilt.
> One solution would be to :
> - block any update during the index construction
> - keep directing pending search operations on the previous table until the
> index is built
> - new search will also be using the previous index until the index is built
> - when the index is built, then we should redirect all the operation to the
> new index
> - when we don't have anymore operations using the old index, then we can
> ditch it
> - one special case is the persistent search operation. We should redirect it
> to use the new index when it has been rebuilt
> - last, not least, the new update operations (those which has been sent after
> the ExtendedOperation has been received) should be hold in a queue until the
> index is built.
> I don't think it should be a big deal to implement such a system, but we can
> restrain it to newly added index (reindexing should be just used when the
> index is broken, and it's more or less an admin task).
> Not sure either it makes sense to add an operation to remove an index, but
> why not.
> We should also have a specific parameter if we want to modify the index cache
> size.
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