Vladimir Ozerov created IGNITE-6182:
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Summary: Change default max memory size from 80% to 20%
Key: IGNITE-6182
URL: https://issues.apache.org/jira/browse/IGNITE-6182
Project: Ignite
Issue Type: Task
Components: general
Affects Versions: 2.1
Reporter: Vladimir Ozerov
Assignee: Igor Seliverstov
Priority: Critical
Fix For: 2.2
Currently we can allocate up to 80% of available RAM by default. It could lead
to swap with potential risk of hang.
In order to improve user experience, we need to do the following:
1) Decrease default to 20% ({{MemoryConfiguration.DFLT_MEMORY_POLICY_FRACTION}})
2) When node starts it should sum max sizes of all memory regions plus Java's
XMX. If result is greater than 50% of total RAM, we should issue a warning
about potential swap.
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