In HADOOP-13669, the base branch (trunk) has 2 findbugs warnings, and a patch fixes them. But pre-commit returns:
-1 findbugs 0m 26s hadoop-common-project/hadoop-kms in trunk has 2 extant Findbugs warnings.
IMO this would be better if it says +1 and (had 2 warnings, fixed).
KMS Server should log exceptions before throwing