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https://issues.apache.org/jira/browse/JAMES-3202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benoit Tellier closed JAMES-3202.
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Fix Version/s: 3.6.0
Resolution: Fixed
https://github.com/linagora/james-project/pull/3429 contributed this
> ReIndexing "filtering" for only outdated indexed data
> -----------------------------------------------------
>
> Key: JAMES-3202
> URL: https://issues.apache.org/jira/browse/JAMES-3202
> Project: James Server
> Issue Type: Improvement
> Reporter: René Cordier
> Priority: Major
> Fix For: 3.6.0
>
>
> *Why?*
> ReIndexing can be slow, and requires to read all messages in the DB, then
> trigger the full reIndexing, even when the document is not outdated.
> All these document changes creates a lot of deleted documents. Lucene "marks
> them as deleted", polluting the entire index until segment merging happens
> (yet another costly operation). The less we do updates the better. To be
> noted that partial updates still leads to a full new document in Lucene, and
> just optimises bandwith + avoids reads.
> *Need specification*
> As an admin, I want to run a reIndex.
> We furtermore handle `RunningOptions` allowing to specify the message rate
> attempted. See [https://github.com/linagora/james-project/pull/3394]
> We still need, given a message, get it's search index representation (at
> least for its mutable data). From this we will be able to condition the
> reindexing to outdated/non exsting data, significantly fasting up the
> reindexing process on mostly valid indexes. The admin could then mention via
> query parameter this option (carried over in running options).
> *MessageSearchIndex API changes*:
> {code:java}
> inderface MessageSearchIndex {
> //...
> Mono<Flags> retrieveIndexedFlags(MailboxId mailboxId, MessageUid uid);
> //...
> }
> {code}
> ElasticSearch will rely on the _GET_ verb (not search).
> Unit test will be written for this new method.
> ReIndexing `RunningOptions` will then carry over the option, that
> ReIndexerPerformer will need to take into account.
> Sample webadmin API:
> {code:bash}
> curl -XPOST http://james:8000/mailboxes?action=reindex&filter=outdatedIndex
> {code}
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