provectus/kafka-ui

Number of messages on Overview page isn't synced properly after topic compaction and doesn't match to number on Messages page

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#3.275 geöffnet am 27. Jan. 2023

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 (4 Kommentare) (0 Reaktionen) (0 zugewiesene Personen)Java (7.799 Stars) (977 Forks)batch import
good first issuescope/backendstatus/acceptedtype/bug

Beschreibung

Describe the bug (Actual behavior) There are 2 pages Overview and Messages where the number of a topic messages is shown. After the topic's compaction, the number of messages isn't updated/synced on Overview page. Please have a look at the screenshots below:

Expected behavior Those metrics should be synced as soon as possible and show an up-to-date value. Otherwise, it's confusing 🤔

Set up

Steps to Reproduce

  1. Create a topic with compact cleanup policy
  2. Produce some messages
  3. Have a look at the number of messages there
  4. Wait for topic compaction or trigger it manually
  5. Have a look at the number of messages on Overview and Messages pages. The numbers are not equal.

Screenshots

Additional context

Contributor Guide

Tech Stack
java
Domain
full stack
Issue Type
bug
SchwierigkeitGeschätzte Implementierungsschwierigkeit für neue Contributors, von 1 für sehr kleine Änderungen bis 5 für Expertenarbeit.
3
Geschätzte ZeitEin grober Zeitrahmen, um zu recherchieren, zu implementieren, zu testen und einen Pull Request vorzubereiten.
half day
AktivitätsstatusWie verfügbar das Issue gerade wirkt: frisch, aktiv, stale, blockiert oder wartet auf Maintainer-Input.
stale
KlarheitWie klar das Issue die erwartete Änderung, Akzeptanzkriterien und den nächsten Schritt erklärt.
clear
Voraussetzungen
basic knowledge of Kafka compactionfamiliarity with Kafka UI project structure
EinsteigerfreundlichkeitEin Score von 1 bis 100, der schätzt, wie zugänglich dieses Issue für First-Time Contributors ist.
50
Research-Richtung
Investigate how the message count is computed on the Overview and Messages pages. Check the backend API endpoints (likely in the topic controller) to see if they return the same value. Review whether the Overview page uses a cached or aggregated metric that is not updated after compaction. Look at recent commits or PRs related to topic metrics. Examine the frontend data fetching logic for the Overview page to see if it re fetches after compaction events.