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From "Kishan Kavala (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-2625) Duplicate usage records when listing large number of records
Date Wed, 22 May 2013 13:03:22 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-2625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13664071#comment-13664071
] 

Kishan Kavala commented on CLOUDSTACK-2625:
-------------------------------------------

Also, it is better to have order by asc. Records can change while querying subsequent pages.

                
> Duplicate usage records when listing large number of records
> ------------------------------------------------------------
>
>                 Key: CLOUDSTACK-2625
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-2625
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Usage
>            Reporter: Kishan Kavala
>             Fix For: 4.2.0
>
>
> listUsageRecords sorts results by start_date. Using pagination, sa,ple mysql query is
as follows.
> SELECT cloud_usage.id, cloud_usage.zone_id, cloud_usage.account_id,
> cloud_usage.domain_id, cloud_usage.description, cloud_usage.usage_display,
> cloud_usage.usage_type, cloud_usage.raw_usage, cloud_usage.vm_instance_id,
> cloud_usage.vm_name, cloud_usage.offering_id, cloud_usage.template_id,
> cloud_usage.usage_id, cloud_usage.type, cloud_usage.size,
> cloud_usage.virtual_size, cloud_usage.network_id, cloud_usage.start_date,
> cloud_usage.end_date FROM cloud_usage WHERE cloud_usage.usage_type = 9  AND
> cloud_usage.start_date BETWEEN '2012-01-01 00:00:00' AND '2013-01-31 23:59:59' 
> AND cloud_usage.end_date BETWEEN '2012-01-01 00:00:00' AND '2013-01-31
> 23:59:59'  ORDER BY cloud_usage.start_date DESC  LIMIT 18000, 2000
> start_date is not unique and when querying large datasets, multiple pages can return
the same data.
> ORDER BY cloud_usage.start_date doesn't create a stable sorted dataset.
> Query should include id in ORDER BY to make it stable.

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