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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area/redpandagood first issuekind/enhance

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

Tech stack
cpp
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C++ basicsFamiliarity with Redpanda startup
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Look for the startup memory check in the Redpanda codebase, likely in the main application file (e.g., src/v/redpanda/application.cc). The change involves removing the exception throw when less than 1G of memory is free, and instead logging a warning or recommendation. Check existing tests related to startup to ensure they still pass after the change. Review the issue comments for any further discussion on the required behavior.
redpanda: remove throwing if 1G of memory is not free · redpanda-data/redpanda#2879 | Good First Issue