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https://issues.apache.org/jira/browse/IGNITE-6003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Chugunov updated IGNITE-6003:
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    Description: 
h2. Motivation
Starting from version 2.0 Ignite keeps all data in offheap area and allocates 
this area on startup based on MemoryPolicy settings.
So several Ignite nodes started on the same machine may allocate an order of 
magnitude more memory than physically available so putting pressure on such 
cluster will cause the machine to hang.

h2. Acceptance Criteria
# Reliable cross-platform algorithm to detect low memory is developed.
# Ignite node fails to start with descriptive error message when the algorithm 
detects low memory which may cause hang.


  was:
h2. Motivation
Starting from version 2.0 Ignite keeps all data in offheap area and allocates 
this area on startup based on MemoryPolicy settings.
So several Ignite nodes started on the same machine may allocate an order of 
magnitude more memory than physically available so when putting pressure on 
such cluster will cause the machine to hang.

h2. Acceptance Criteria
# Reliable cross-platform algorithm to detect low memory is developed.
# Ignite node fails to start with descriptive error message when the algorithm 
detects low memory which may cause hang.



> Detecting low memory on ignite node startup
> -------------------------------------------
>
>                 Key: IGNITE-6003
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6003
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Sergey Chugunov
>             Fix For: 2.2
>
>
> h2. Motivation
> Starting from version 2.0 Ignite keeps all data in offheap area and allocates 
> this area on startup based on MemoryPolicy settings.
> So several Ignite nodes started on the same machine may allocate an order of 
> magnitude more memory than physically available so putting pressure on such 
> cluster will cause the machine to hang.
> h2. Acceptance Criteria
> # Reliable cross-platform algorithm to detect low memory is developed.
> # Ignite node fails to start with descriptive error message when the 
> algorithm detects low memory which may cause hang.



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