[jira] [Created] (UNOMI-736) Metadata Items: indices reduction PoC cleanup

["Kevan Jahanshahi (Jira)" <ji...@apache.org>]

Kevan Jahanshahi created UNOMI-736:
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             Summary: 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
             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/571]

What remains to do in the PoC:
 * make the itemType/index name map configurable instead of currently hardcoded in the Java Persistence Service
 * 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.)

Not in current ticket:
 * handle migration



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