[jira] [Created] (ROL-2092) Optimizing the query that loads the comments in the Admin UI

[Kohei Nozaki (JIRA)]

Kohei Nozaki created ROL-2092:
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             Summary: Optimizing the query that loads the comments in the Admin 
UI
                 Key: ROL-2092
                 URL: https://issues.apache.org/jira/browse/ROL-2092
             Project: Apache Roller
          Issue Type: Improvement
          Components: Data Model & JPA Backend
    Affects Versions: 5.1.2
            Reporter: Kohei Nozaki
            Assignee: Roller Unassigned
            Priority: Minor
         Attachments: roller-slowquery.png

Listing comments in the admin UI seems useless due to terribly slow query in a 
Roller instance which has over ten thousands comments. Originally reported by 
Matt:
http://mail-archives.apache.org/mod_mbox/roller-dev/201503.mbox/%3ccafhcnt4hth01ghkntthikpf3allfyt1urqvzxekm8a_y2bd...@mail.gmail.com%3e

I think many unnecessary joins happen in it, So I believe it can be optimized a 
way without altering any of existing roller tables (I guess using {{NEW}} 
clause in the JPQL might help...).

Anyway I wish I could see the result of {{EXPLAIN}} for the query...




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