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https://issues.apache.org/jira/browse/OAK-6535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123026#comment-16123026
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Vikas Saurabh commented on OAK-6535:
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Discussed a few ideas around this with [~chetanm] offline:
# unique index pruning can probably be done by tying into what's being added
into lucene structure (basically prune data from prop-index-tree which is added
to lucene)... for non-unique ones, throwing away buckets at index cycle is
still easier.
# instead of each non-unique-prop-def having content-mirror-store-strategy
buckets, we can have a single content-mirror-store-strategy at index level
which can index values for each non-unique-property
## this helps in purge logic a bit
## assumes that values for multiple non-unique-prop changes would be more or
less disjoint between consecutive async indexing cycle runs
## while discussing this idea, it seemed that it would answer the open points
on wiki \[0] - but that's incorrect. Answering {{a='b' AND c='d'}} can't be
done by this idea.
[~chetanm], regarding point 2.3 above: assuming number of changes between
consecutive async cycle runs remain moderate in the sense that there aren't
HUGE FLAT structure: maybe we can have sorted traversal over content tree (on
node-name) and hence solve the {{AND}} by skipping matches which aren't found
in all the cursors.
\[0]:
https://wiki.apache.org/jackrabbit/Synchronous%20Lucene%20Property%20Indexes#Open_Points
> Synchronous Lucene Property Indexes
> -----------------------------------
>
> Key: OAK-6535
> URL: https://issues.apache.org/jira/browse/OAK-6535
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: lucene, property-index
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Fix For: 1.8
>
>
> Oak 1.6 added support for Lucene Hybrid Index (OAK-4412). That enables near
> real time (NRT) support for Lucene based indexes. It also had a limited
> support for sync indexes. This feature aims to improve that to next level and
> enable support for sync property indexes.
> More details at
> https://wiki.apache.org/jackrabbit/Synchronous%20Lucene%20Property%20Indexes
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