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Replica "Got fatal error 1236" After Losing Connection to Source While Reading > 4GB Binlog (Doc ID 2018766.1)

Last updated on NOVEMBER 29, 2023

Applies to:

MySQL Server - Version 4.0 and later
Information in this document applies to any platform.

Symptoms

Disclaimer: Starting from v8.0, some terms have been deprecated. Older releases will only use the deprecated terminology, and new releases will only use new terminology. Please see https://dev.mysql.com/doc/mysqld-version-reference/en/ for a complete list of those changes, and in which minor versions it happened.

Here is how you can identify the scenario.  Given the error log snippet:

  • Not all replicas will break due to this every time.  Therefore it is common that some replicas may be unaffected, such as if they didn't have to reconnect.

    • Changes

    Binary logs on the source are larger than 4GB in size. This often happens after changing the binlog_format from STATEMENT to ROW.

    Another change might be some bulk import or other large transactions have started occurring on the source.

    Cause

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    In this Document
    Symptoms
    Changes
    Cause
    Solution
     If on MySQL 5.6+
     Other solutions
    References


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