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https://issues.apache.org/jira/browse/IGNITE-6012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Kuznetsov reassigned IGNITE-6012:
----------------------------------------

    Assignee: Andrey Novikov  (was: Alexey Kuznetsov)

Please review my changes.

> Improve GridJettyRestHandler.processRequest()
> ---------------------------------------------
>
>                 Key: IGNITE-6012
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6012
>             Project: Ignite
>          Issue Type: Improvement
>          Components: rest
>    Affects Versions: 2.1
>            Reporter: Alexey Kuznetsov
>            Assignee: Andrey Novikov
>             Fix For: 2.2
>
>
> In case of large result  
> {code}
> private void processRequest(String act, HttpServletRequest req, 
> HttpServletResponse res) {
> ...
> json = jsonMapper.writeValueAsString(cmdRes)
> ....
> {code}
> Will fail with OOME, beacuse jsonMapper.writeValueAsString(cmdRes) internally 
> will create a StringBuilder and will try to allocate large amount of memory.
> This could be easily fixed by writing object directly to response output 
> stream via. 
> {code}
> jsonMapper.writeValue(out, cmdRes);
> {code}



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