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https://issues.apache.org/jira/browse/IGNITE-20424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikhail Petrov updated IGNITE-20424:
------------------------------------
    Description: 
All messages designated for the thin client are accumulated in the selector 
queue GridSelectorNioSessionImpl#queue before they are sent. Note that  
GridSelectorNioSessionImpl#queue  is unbound. If the thin client connection is 
slow and a huge number of messages with a large weight will be sent to it, 
GridSelectorNioSessionImpl#queue growing size can lead to OOM.

See https://issues.apache.org/jira/browse/IGNITE-20327 for real scenario to 
reproduce it.

We need to investigate mechanisms to limit the thin client message queue size.

  was:
All messages designated for the thin client are accumulated in the selector 
queue GridSelectorNioSessionImpl#queue before they are sent. Note that  
GridSelectorNioSessionImpl#queue  is unbound. If the thin client connection is 
slow and a huge number of messages with a large weight will be sent to it, 
GridSelectorNioSessionImpl#queue growing size can lead to OOM.

See https://issues.apache.org/jira/browse/IGNITE-20327 For real scenario to 
reproduce it.


> [Thin clients] Slow thin clients connection can lead to node failure with OOM
> -----------------------------------------------------------------------------
>
>                 Key: IGNITE-20424
>                 URL: https://issues.apache.org/jira/browse/IGNITE-20424
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Mikhail Petrov
>            Priority: Major
>
> All messages designated for the thin client are accumulated in the selector 
> queue GridSelectorNioSessionImpl#queue before they are sent. Note that  
> GridSelectorNioSessionImpl#queue  is unbound. If the thin client connection 
> is slow and a huge number of messages with a large weight will be sent to it, 
> GridSelectorNioSessionImpl#queue growing size can lead to OOM.
> See https://issues.apache.org/jira/browse/IGNITE-20327 for real scenario to 
> reproduce it.
> We need to investigate mechanisms to limit the thin client message queue size.



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