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From "Guido Wimmel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SYNCOPE-408) Add index on task.executed
Date Thu, 01 Aug 2013 10:23:50 GMT

     [ https://issues.apache.org/jira/browse/SYNCOPE-408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guido Wimmel updated SYNCOPE-408:
---------------------------------

    Attachment: indexes.xml.patch
    
> Add index on task.executed
> --------------------------
>
>                 Key: SYNCOPE-408
>                 URL: https://issues.apache.org/jira/browse/SYNCOPE-408
>             Project: Syncope
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.1.3
>            Reporter: Guido Wimmel
>            Priority: Minor
>         Attachments: indexes.xml.patch
>
>
> In our Syncope installation (1.1.3 on Tomcat/MySQL) we observed long execution times
(>1s) for TaskDAO.findToExec(), which is called periodically from NotificationJob to determine
which notifications should be sent.
> According to our analysis, this is due to the fact that TaskDAO.findToExec() performs
a full scan on all entries of the task table with DTYPE="NotificationTask" (which could be
a large number as all executed tasks are kept), although only very few tasks are selected
(those with executed=0).
> Creating an index on task.executed solved this problem; attached is a corresponding patch
against the branch 1.1.X.

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