[IGNITE-6003] Detecting low memory on ignite node startup

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Labels: usability
• Assignee: Unassigned
• Reporter: Sergey Chugunov
• Created: 09/Aug/17 09:01
• Updated: 05/Sep/17 12:00
• Resolved: 29/Aug/17 10:11

Description

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.

Acceptance Criteria

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

Issue Links

• duplicates: IGNITE-6182 Change default max memory size from 80% to 20%