Fix ES:QL Driver logging for 4xx errors and cancellations#140905
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shmuelhanoch merged 3 commits intomainfrom Feb 8, 2026
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Fix ES:QL Driver logging for 4xx errors and cancellations#140905shmuelhanoch merged 3 commits intomainfrom
shmuelhanoch merged 3 commits intomainfrom
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x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/operator/Driver.java
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GalLalouche
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Feb 5, 2026
Reduce log noise by logging 4xx client errors (including TaskCancelledException) at DEBUG level instead of WARN/ERROR. This addresses the issue where over 80% of ES:QL errors in serverless are due to user cancellations, which are expected user actions rather than system failures. - TaskCancelledException already handled separately at DEBUG level - RuntimeException with 4xx status codes now logged at DEBUG level - 5xx server errors continue to be logged at WARN level Relates to #138008
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Fix ES:QL Driver logging for 4xx errors and cancellations
Reduces log noise by logging 4xx client errors (including cancellations) at DEBUG instead of WARN/ERROR.
Problem:
Over 80% of ES:QL errors in serverless are from user cancellations, which are expected user actions, not system failures. These were logged at WARN/ERROR, creating noise.
Solution:
TaskCancelledException is already handled separately at DEBUG level
RuntimeException with 4xx status codes (400-499) are now logged at DEBUG level
5xx server errors continue to be logged at WARN level
Impact:
Reduces log noise from expected client actions while preserving visibility into actual system failures.
Closes #138008