manik.jindal
07/04/2026, 6:27 AMkapa.ai
07/04/2026, 6:27 AMArithmeticException: / by zero error in MySqlSourceJdbcPartitionFactory.internalCalculateBoundaries that affects versions 3.50.2, 3.50.3, 3.50.5, and 3.50.6. [MySQL ArithmeticException issue] [Regression tracking issue]
Impact:
• Blocks initial syncs on larger tables (reported on tables ~100 GB and ~942 MB)
• Occurs during the partitioning stage with incremental | append + deduped sync mode and CDC (binlog) replication
• Smaller tables in the same database may sync without issues
Fix: A fix was shipped in v3.0.8 (as noted in the issue comments). A later patch bump to v3.52.4 also addressed a related CDC payload-limit issue. [Fix confirmation] [CDC payload fix]
Recommendation: Upgrade away from v3.50.5. If you cannot upgrade, the reported workaround is to downgrade to v3.11.21 (Docker Hub tag), though this is not ideal for Cloud users.
Postgres Source — v3.6.35 This version also has known issues:
1. CDC LSN advancement bug — Versions from ~3.6.19 onward (including 3.6.35) use a PgJDBC version (42.7.x) that automatically advances confirmed_flush_lsn, causing CDC syncs to fail with:
"Saved offset is before replication slot's confirmed lsn"
Versions 3.6.15 and 3.6.18 are reported as stable workarounds. [LSN issue] [PgJDBC issue]
2. IndexOutOfBoundsException during CDC sync — Reported on v3.6.35 after several hours of running, causing unreliable CDC replication. [IndexOutOfBounds issue]
3. op:m message events not filtered in shutdown cleanup loop — Affects v3.6.35+ and can cause IllegalStateException: ChangeEvent contains no before or after records during Debezium shutdown. [op:m filter issue]
4. Write timeout if destination is slow — Also reported on v3.6.35 when the destination (e.g., Databricks) takes time to initialize. [Timeout issue]
Recommendation: v3.6.35 is not recommended for production CDC workloads. Consider using v3.6.15 or v3.6.18 as a stable fallback for CDC, or check the latest available version for fixes.
Summary It is strongly recommended to upgrade both connectors to their latest available versions or use the known-stable fallback versions mentioned above. 👍 0 button 👎 0 button ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help., with interactive elements