apache/beam

Non-transient non-serializable instance field in WatermarkHold

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#18,014 opened on Jun 3, 2022

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Description

FindBugs SE_BAD_FIELD: Non-transient non-serializable instance field in serializable class

Applies to: WatermarkHold.timerInternals.

This is a good starter bug. When fixing, please remove the corresponding entries from findbugs-filter.xml and verify the build passes.

Imported from Jira BEAM-420. Original Jira may contain additional context. Reported by: swegner. This issue has child subcomponents which were not migrated over. See the original Jira for more information.

Contributor guide

Research direction
Add the 'transient' keyword to the 'timerInternals' field in WatermarkHold.java, or make it Serializable. Then remove the corresponding exclusion from findbugs filter.xml and run the build to verify.
Tech stack
java
Domain
backend
Issue type
Bug
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.
Under 1 hour
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
JavaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80