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Product Management Root Cause Analysis Question: Investigating sudden latency spike in Confluent's Kafka Connect connectors

What's causing the sudden spike in latency for Confluent's Kafka Connect connectors?

Problem-Solving Technical Analysis Data Pipeline Management Big Data Cloud Computing Enterprise Software
Performance Optimization Root Cause Analysis Troubleshooting Data Integration Kafka

Introduction

The sudden spike in latency for Confluent's Kafka Connect connectors is a critical issue that demands immediate attention. This problem could significantly impact data integration workflows, potentially causing delays in real-time data processing and analytics for our customers. I'll approach this issue systematically, focusing on identifying the root cause, validating hypotheses, and developing both short-term fixes and long-term solutions.

Framework overview

This analysis follows a structured approach covering issue identification, hypothesis generation, validation, and solution development.

Step 1

Clarifying Questions (3 minutes)

  • Looking at the timing, I'm thinking this might be related to a recent deployment. Has there been any significant update to the Kafka Connect infrastructure or connectors in the past week?

Why it matters: Recent changes often correlate with performance issues. Expected answer: Yes, there was a minor update to the connector framework. Impact on approach: If confirmed, we'd focus on the changes made in that update.

  • Considering the nature of Kafka Connect, I'm wondering about data volume changes. Have we seen any unusual spikes in data ingestion or processing volume recently?

Why it matters: Increased data load could explain latency issues. Expected answer: Data volume has been relatively stable. Impact on approach: If stable, we'd shift focus to internal system issues rather than external factors.

  • Given the complexity of Kafka ecosystems, I'm curious about the scope. Is this latency spike affecting all connectors or specific types?

Why it matters: Helps narrow down the problem area. Expected answer: The issue is more pronounced in sink connectors. Impact on approach: We'd prioritize investigating sink connector-specific components.

  • Thinking about our monitoring setup, I'm wondering about the detection timeline. When was this latency spike first observed, and has it been consistent since then?

Why it matters: Helps establish a timeline for potential causes. Expected answer: Spike noticed 48 hours ago, consistently high since then. Impact on approach: We'd focus on events or changes around that timeframe.

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