akka/akka-core

GraphInterpreter should not keep references to shut-down logics

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#23,439 opened on Jul 26, 2017

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Description

When multiple stages are fused, a single alive stage will keep the GraphInterpreter alive and with it references to all already completed GraphStage logics (which may or may not keep a significant amount of memory).

See also #23437.

Contributor guide

Research direction
Investigate the GraphInterpreter implementation to understand how it holds references to completed stages and explore ways to release them, possibly by examining the lifecycle of fused stages.
Tech stack
scala
Domain
backend
Issue type
Bug
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.
1-3 hours
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
Akka Streams
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40