[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)
diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java
index 979ae95..7d9f2fc 100644
--- a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java
+++ b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java
@@ -1376,7 +1376,7 @@
// Do not print stack traces for expected exceptions
if (cause instanceof NoSuchElementException) {
cause = new TopicNotFoundException("Topic Not Found.");
- log.info("[{}] Failed to load topic {}, producerId={}: Topic not found", remoteAddress, topicName,
+ log.warn("[{}] Failed to load topic {}, producerId={}: Topic not found", remoteAddress, topicName,
producerId);
} else if (!Exceptions.areExceptionsPresentInChain(cause,
ServiceUnitNotReadyException.class, ManagedLedgerException.class)) {
