v.20.7Improvement

Exceptions Forwarded to Client on ALTER or Mutation Errors

Now exceptions forwarded to the client if an error happened during ALTER or mutation. Closes #11329. #12666 (alesapin).
Exceptions that occur during ALTER or mutation operations are now forwarded directly to the client.

Why it matters

Previously, errors during ALTER or mutation queries might not have been properly reported to the client, making troubleshooting difficult. This feature ensures that any exceptions raised during these operations are immediately communicated to the client, improving error visibility and debugging efficiency.

How to use it

No special configuration is needed. When performing ALTER or mutation queries, any errors will automatically be forwarded and displayed to the client.