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https://issues.apache.org/jira/browse/UNOMI-736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17685709#comment-17685709
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David Griffon commented on UNOMI-736:
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Regarding the mapping added
https://github.com/apache/unomi/blob/e8ac4a522321127f0cd033397a455c63850a1d24/persistence-elasticsearch/core/src/main/resources/META-INF/cxs/mappings/item.json
We need to check if it can be simplified
> Metadata Items: indices reduction PoC cleanup
> ---------------------------------------------
>
> Key: UNOMI-736
> URL: https://issues.apache.org/jira/browse/UNOMI-736
> Project: Apache Unomi
> Issue Type: Task
> Affects Versions: unomi-2.1.0
> Reporter: Kevan Jahanshahi
> Priority: Major
> Fix For: unomi-2.2.0
>
>
> Recently we worked on reducing the number of ElasticSearch indices used in
> order to reduce ElasticSearch cost and optimize memory cost mostly due to a
> lot of small indices.
> So the idea is to store all the Unomi items in the same index as much as
> possible.
> Here is the PoC PR: [https://github.com/apache/unomi/pull/573]
> What remains to do in the PoC:
> * make the itemType/index name map configurable instead of currently
> hardcoded in the Java Persistence Service ({*}to be discussed. could be
> dangerous to change the conf during server runtime{*})
> * Fix groovy action id conflict:
> ** currently the rule resolution system is trying to load a *ActionType*
> item with the id of a groovy action, since they are stored in the same index
> now, it found a groovy Action and the deserialzation is failing, we should
> find a way to avoid such resolution.
> * Fix tests if necessary (current test scope should be green as everything
> should continue work like before.)
> * If we decide to make persona + profile sharing same index could be
> interesting, but we need to make sure nobody can use a personaID as a
> profileId in context request, and make sure we are still secure ! (same for
> the session and personaSession), but I think it is really interesting to do
> that as this objects are actually the same at the end.
> * Last but most important:
> ** decide the final name of the index, in the PoC it's named: *context-item*
> ** decide the final sharing strategy
> *** (separate metadata items or not ? Personally I dont thinks that would
> make sense to do a separation here)
> *** (share between profile and persona ?) That would be great to optimize
> the persona index that really doesn't contains a lot in general, same for
> sessions.
> Current sharing strategy from the PoC:
> {code:java}
> static {
> // metadata items
> itemTypeIndexNameMap.put("actionType", "item");
> itemTypeIndexNameMap.put("campaign", "item");
> itemTypeIndexNameMap.put("campaignevent", "item");
> itemTypeIndexNameMap.put("goal", "item");
> itemTypeIndexNameMap.put("userList", "item");
> itemTypeIndexNameMap.put("propertyType", "item");
> itemTypeIndexNameMap.put("scope", "item");
> itemTypeIndexNameMap.put("conditionType", "item");
> itemTypeIndexNameMap.put("rule", "item");
> itemTypeIndexNameMap.put("scoring", "item");
> itemTypeIndexNameMap.put("segment", "item");
> itemTypeIndexNameMap.put("groovyAction", "item");
> // direct item implems
> itemTypeIndexNameMap.put("topic", "item");
> itemTypeIndexNameMap.put("patch", "item");
> itemTypeIndexNameMap.put("jsonSchema", "item");
> itemTypeIndexNameMap.put("importConfig", "item");
> itemTypeIndexNameMap.put("exportConfig", "item");
> itemTypeIndexNameMap.put("rulestats", "item");
> itemTypeIndexNameMap.put("profile", "profile");
> itemTypeIndexNameMap.put("persona", "profile");
> itemTypeIndexNameMap.put("session", "session");
> itemTypeIndexNameMap.put("personaSession", "session");
> } {code}
> Not in current ticket:
> * handle migration
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