apache/pulsar

Send Key hash range change events to consumers in Key_Shared subscription.

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#6,555 opened on Mar 19, 2020

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 (5 comments) (5 reactions) (1 assignee)Java (13,697 stars) (3,485 forks)batch import
good first issuehelp wantedtype/feature

Description

Master issue: #4077 Is your feature request related to a problem? Please describe. Send Key hash range change events to consumers in Key_Shared subscription.

Contributor guide

Tech stack
java
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Knowledge of Apache PulsarUnderstanding of Key Shared subscriptionsFamiliarity with hash range concept
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
The issue asks to send Key hash range change events to consumers in Key Shared subscription. Research the master issue #4077 for context. Examine the Pulsar source code, particularly the consumer and subscription classes related to Key Shared. Look for existing event mechanisms and how hash range changes are currently handled. The implementation may involve modifying the consumer API or protocol to notify consumers of range changes. There are 5 comments on the issue; review them for additional details and potential design considerations.