In reviewing the compatibility report for 2.6.0, I missed a real issue. I think part of the problem for me was the amount of noise in the report related to changes in shaded zookeeper packages.
According to the usage report of japi-compliance-checker, we could provide a "-skip-packages" argument which points at a file with package names to exclude. I wonder if we should exclude org.apache.hadoop.hbase.shaded and org.apache.hbase.thirdparty. Thoughts? I can file a JIRA and get it done if there's consensus.