[jira] [Updated] (CONTINUUM-2758) Load during build preparation is proportional to number of project build results

["Brent N Atkinson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CONTINUUM-2758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brent N Atkinson updated CONTINUUM-2758:
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    Summary: Load during build preparation is proportional to number of project build results  (was: High CPU and memory load when preparing builds with many build results)

> Load during build preparation is proportional to number of project build results
> --------------------------------------------------------------------------------
>
>                 Key: CONTINUUM-2758
>                 URL: https://issues.apache.org/jira/browse/CONTINUUM-2758
>             Project: Continuum
>          Issue Type: Bug
>    Affects Versions: 1.4.2
>            Reporter: Brent N Atkinson
>            Assignee: Brent N Atkinson
>             Fix For: 1.5.0
>
>
> Found while addressing CONTINUUM-1621, due to the way that Continuum find the previous build results during build preparation, memory and CPU load increases proportionally to the number of build results for a project. This will eventually result in 100% cpu utilization and {{OutOfMemoryErrors}}.
> To produce this, I imported a project and replicated a set of build results until there were over 1,000,000. When I restarted Continuum, the CPU and memory utilization (viewable using jconsole) would spike until it threw and OOME.
> By producing a heap dump and analyzing it, I was able to pinpoint the problem area, a bad query in the DAO.



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