Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1012#issuecomment-131086524
This is the general pattern in the code. If composition of the log string
is expensive, we check the log level. We make exceptions for `WARN` and `ERROR`
sometimes (because they indicate an abnormal situation anyways).
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
