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https://issues.apache.org/jira/browse/ROL-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065585#comment-15065585
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Kohei Nozaki commented on ROL-2092:
-----------------------------------
I can see the message {{Sort aborted}} in the error page so I guess the cause
is sorting that adding an index to {{roller_comment.posttime}} may solve the
issue. I can't see any {{CREATE INDEX}} statement for that column in neither my
Roller instance nor {{createdb.vm}}.
Reference: http://stackoverflow.com/questions/5165112/mysql-error-sort-aborted
> 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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