redpanda-data/redpanda

redpanda: remove throwing if 1G of memory is not free

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#2,879 opened on Nov 5, 2021

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Description

Today, unless developer_mode is true, we throw if there is less than 1G of free memory on startup.

Similar to how we recommend XFS, we can recommend that 1G memory be available, but allow things to work if less is available. Redpanda works for low memory situations, and not throwing allows us to drop into memory constrained environments more easily.

JIRA Link: CORE-777

Contributor guide

Research direction
Locate the startup memory check that throws when less than 1G is free. Modify it to emit a warning instead, allowing Redpanda to start in low memory environments. Ensure the warning suggests having 1G free for optimal performance.
Tech stack
cpp
Domain
backenddatabase
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++memory management
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60