apache/beam

Check immutability violations in DirectPipelineRunner

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#18,013 opened on Jun 3, 2022

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Description

Users are going to mutate inputs and outputs of DoFn inappropriately. We should help their tests fail to catch such mistakes. (Similar to the DirectPipelineRunner in Java SDK)

Imported from Jira BEAM-529. Original Jira may contain additional context. Reported by: altay. This issue has child subcomponents which were not migrated over. See the original Jira for more information.

Contributor guide

Research direction
Examine the DirectPipelineRunner code to identify where inputs/outputs are passed to DoFn and add checks to detect mutations, similar to the approach used in the Java SDK's DirectRunner.
Tech stack
java
Domain
backenddata engineering
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
JavaApache Beam
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40