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May 10, 2022 · Databases

Analysis and Reproduction of MySQL Binlog Replication Error 1236 (Could Not Open Log File)

This article analyzes a MySQL replication failure where the slave reports error 1236 "Could not open log file", explains the root cause involving duplicate entries in the binlog index after manual deletion of active binlog files, and provides step‑by‑step reproduction procedures and preventive recommendations.