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From "Denis Magda (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-6814) Detailed memory consumption on start and OOM reporting
Date Wed, 01 Nov 2017 23:09:00 GMT
Denis Magda created IGNITE-6814:

             Summary: Detailed memory consumption on start and OOM reporting
                 Key: IGNITE-6814
                 URL: https://issues.apache.org/jira/browse/IGNITE-6814
             Project: Ignite
          Issue Type: Improvement
      Security Level: Public (Viewable by anyone)
    Affects Versions: 2.0
            Reporter: Denis Magda
            Priority: Critical
             Fix For: 2.4

Presently Ignite allocates 20% of RAM on a node startup, however, the user doesn't see automatically
chosen memory settings. Also, if there a node runs out of RAM and throws an OOM error there
are no hints on why this happened and how to fix it.

* Print out memory settings on startup for every data region set up (maximum size, initial
size, etc.)
* Provide guidelines on how to overcome OOM when it happens. Specify a data region name with
all its current parameters and suggest three possible things - tweak maximum memory, setup
eviction policies or enable Ignite persistence. All this is covered in official docs: https://apacheignite.readme.io/docs#section-data-regions

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