[jira] [Created] (IGNITE-6003) Detecting low memory on ignite node startup

["Sergey Chugunov (JIRA)" <ji...@apache.org>]

Sergey Chugunov created IGNITE-6003:
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             Summary: 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


h2. Motivation
Starting from version 2.0 Ignite keeps all data offheap and allocates it 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.




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