Denis Magda created IGNITE-6814:
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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.
Suggestions:
* 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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