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https://issues.apache.org/jira/browse/CLOUDSTACK-1339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582743#comment-13582743
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Parth Jagirdar commented on CLOUDSTACK-1339:
--------------------------------------------

Marcus/Prachi,

I observed this issue as well. Hope my findings help narrow zero on the issue...

I am attaching a log. The first and last line are the start/stop for Job which 
tok about 26 mins t finish and MS was unresponsive during that time.
I also observed that Java process was consuming about 75% Mem.

I do not have steps to reproduce but this is definitely happening while login / 
logout and or general UI navigation.

I also notice multiple 

013-02-20 14:53:55,652 DEBUG [cloud.api.ApiServlet] (catalina-exec-25:null) 
===START===  10.217.252.57 -- GET  
command=listSwifts&response=json&sessionkey=0%2FgRHj%2FH38uNPApUtCKPvH9PRe8%3D&_=1361400840212
2013-02-20 14:53:55,690 DEBUG [cloud.api.ApiServlet] (catalina-exec-25:null) 
===END===  10.217.252.57 -- GET  
command=listSwifts&response=json&sessionkey=0%2FgRHj%2FH38uNPApUtCKPvH9PRe8%3D&_=1361400840212
2013-02-20 14:53:55,695 DEBUG [cloud.api.ApiServlet] (catalina-exec-6:null) 
===START===  10.217.252.57 -- GET  
command=listS3s&response=json&sessionkey=0%2FgRHj%2FH38uNPApUtCKPvH9PRe8%3D&_=1361400840256
2013-02-20 14:53:55,754 ERROR [cloud.api.ApiServlet] (catalina-exec-6:null) 
unknown exception writing api response
com.cloud.utils.exception.CloudRuntimeException: DB Exception on: 
com.mysql.jdbc.JDBC4PreparedStatement@6218e457: SELECT user.id, user.username, 
user.password, user.firstname, user.lastname, user.account_id, user.email, 
user.state, user.api_key, user.secret_key, user.created, user.removed, 
user.timezone, user.registration_token, user.is_registered, user.uuid, 
user.region_id FROM user WHERE user.id = 2 
        at com.cloud.utils.db.GenericDaoBase.findById(GenericDaoBase.java:976)

...Parth

                
> ASF 4.1: Management server becomes unresponsive
> -----------------------------------------------
>
>                 Key: CLOUDSTACK-1339
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1339
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server
>    Affects Versions: 4.1.0
>            Reporter: Srikanteswararao Talluri
>            Assignee: Prachi Damle
>            Priority: Blocker
>             Fix For: 4.1.0
>
>
> management server becomes unresponsive after running for a while and after 
> some time the process shuts down.
> This is blocking the testing 
> logs can be found @ https://citrix.sharefile.com/d/sa684d7a73fb45ba8

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