Github user phunt commented on the issue:
https://github.com/apache/zookeeper/pull/273
iiuc that change comes from
https://issues.apache.org/jira/browse/ZOOKEEPER-2247 and the concern is that
we'd silently be broken without this log message. While the code change is
trivial I'm concerned about the operational impact. Did you look into what
happens in this situation? Without this log message how would the operator
diagnose this problem? Is there a better way to do this? e.g. if it's truly an
"ERROR" shouldn't we shut down the server? We'd obviously need to consider the
b/w compat issues here as well such as the use in Kafka as recently pointed out.
---
