1577
MariaDBERRORNotableBinary LogHIGH confidence
Base64 decode error
Production Risk
Medium — binary log replay may be interrupted; replication may stall.
What this means
An error occurred while decoding a base64-encoded binary log event.
Why it happens
- 1Corrupted or truncated base64 data in BINLOG statement.
- 2Invalid base64 string passed to a BINLOG command during manual replay.
How to reproduce
trigger — this will error
trigger — this will error
BINLOG 'not-valid-base64!!!';
expected output
ERROR 1577 (HY000): Lost connection to MySQL server during query
Fix
Verify binary log file integrity
Verify binary log file integrity
mysqlbinlog --verify-binlog-checksum binlog.000001
Why this works
Use mysqlbinlog with checksum verification to detect corruption in binary log files.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 1577 ER_BASE64_DECODE_ERROR
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