tree a0d283eade7bf5190c485acdc6fc27313012ce1a
parent 97598159c56d40a9527d2b16c0ccab1be732c9b4
author Michael Marshall <mmarshall@apache.org> 1665551161 -0700
committer Michael Marshall <mmarshall@apache.org> 1665551201 -0500
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[broker] ServerCnx: log at warning level when topic not found (#16225)

### Motivation

In https://github.com/apache/pulsar/pull/13950, we switched an error log to an info log. @hsaputra requested on Pulsar Slack we use warn level so that alerts still fire in for the case when the topic is not found.

### Modifications

* Replace `info` with `warn` when topic is not found in the `ServerCnx` class.
- [x] `doc-not-needed`

(cherry picked from commit 72e044515d8dae3ce452818261b7328a4deb6e5f)