[KUDU-3351] Add insert error count metrics in WriteResponsePB

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.17.0
• Assignee: Riza Suminto
• Reporter: Riza Suminto
• Created: 09/Feb/22 19:06
• Updated: 16/Oct/23 17:34
• Resolved: 30/Apr/22 20:13

Description

KUDU-1563 adds support for INSERT_IGNORE, UPDATE_IGNORE, and DELETE_IGNORE.
However, it is currently lack of per-session metrics about how many rows get ignored vs modified.

In regular INSERT operation, we depends on per_row_errors field in WriteResponsePB to count how many row operations are failed.
https://github.com/apache/kudu/blob/0cb2b7c/src/kudu/tserver/tserver.proto#L175-L183 
But with INSERT_IGNORE, this field will be empty. We should add relevant metrics field to this WriteResponsePB.

Issue Links

• is related to: IMPALA-10465 Improve Kudu DML error logging in Impala
• relates to: KUDU-3365 Expose INSERT/UPDATE metrics in the Java client API