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From "Nirmal Fernando (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (STRATOS-614) Scale down logic does not execute as intended
Date Wed, 16 Apr 2014 13:37:17 GMT

    [ https://issues.apache.org/jira/browse/STRATOS-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13971402#comment-13971402
] 

Nirmal Fernando commented on STRATOS-614:
-----------------------------------------

AFAIS upon MemberTerminatedEvent it's getting removed (check
MemberTerminatedEventListener).






-- 
Best Regards,
Nirmal

Nirmal Fernando.
PPMC Member & Committer of Apache Stratos,
Senior Software Engineer, WSO2 Inc.

Blog: http://nirmalfdo.blogspot.com/


> Scale down logic does not execute as intended
> ---------------------------------------------
>
>                 Key: STRATOS-614
>                 URL: https://issues.apache.org/jira/browse/STRATOS-614
>             Project: Stratos
>          Issue Type: Bug
>          Components: Autoscaler
>            Reporter: Imesh Gunaratne
>
> According to a flow test carried out on the latest code base, scale down functionality
does not work as intended.
> Scenario: 
> 1. Partition Max Instance Count set to 3
> 2. Send a sample request load to take scale up action. Autoscaler will spin up 3 instances.
> 3. Stop the sample request load.
> 4. Let the service cluster scale down.
> 5. One instance being terminated but two remains.
> As found in the Autoscaler logs Member Stat Context of the terminated member is not being
removed from the Cluster Context. As a result the same member being selected in each scale
down action round.



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