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RootCause

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Aikesheng Open Source Community

Apr 2, 2024 · Databases

Root Cause Analysis of MySQL Replica Synchronization Hang and Mitigation Recommendations

This article investigates a MySQL 8.0.27 replica that repeatedly hangs during show replica status, analyzes worker thread states, InnoDB status, checkpoint and I/O load, identifies an oversized Redo Log usage as the root cause, and provides configuration and upgrade suggestions to resolve the issue.

InnoDBMTSMySQL

0 likes · 14 min read

Root Cause Analysis of MySQL Replica Synchronization Hang and Mitigation Recommendations

Sohu Tech Products

Jan 18, 2023 · Big Data

Root Cause Analysis of Flink TaskManager Failover Causing Data Reprocessing and Business Impact

An incident report details how a scheduled machine reboot on Alibaba Cloud triggered a Flink TaskManager failover, leading to excessive data replay, increased ES pressure, and significant business latency, and explains the root cause involving disabled checkpoints and timestamp‑based offset consumption.

BigDataCheckpointFailover

0 likes · 10 min read

Root Cause Analysis of Flink TaskManager Failover Causing Data Reprocessing and Business Impact