The Ultimate Guide to High Availability with MariaDB

FORMAT_DESCRIPTION_EVENT

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This event occurs at the beginning of a binary log file, at position 4 (after the 4 magic number bytes)

Event is byte<19> event header + data

Fields

  • uint<4> The binary log format version. This is 4 in MariaDB 10 and up.
  • byte<50> The MariaDB server's version (example: 10.2.1-debug-log), padded with 0x00 bytes on the right.
  • uint<4> Timestamp in seconds when this event was created (this is the moment when the binary log was created). This value is redundant; the same value occurs in the timestamp header field.
  • uint<1> The header length. This length - 19 gives the size of the extra headers field at the end of the header for other events.
  • byte<EOF> Variable-sized. An array that indicates the post-header lengths for all event types. There is one byte per event type that the server knows about.

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