As Apache Hudson doesn't function for a few weeks now I have ran test-patch.sh locally:
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 6 new or modified tests.
-1 javadoc. The javadoc tool appears to have generated 1 warning messages.
+1 javac. The applied patch does not increase the total number of javac compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of release audit warnings.
+1 system tests framework. The patch passed system tests framework compile.
The warning in question is caused by
[javadoc] /homes/cos/work/git/hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/metrics/FSDatasetMBean.java:40: warning - Tag @see: reference not found: org.apache.hadoop.h
Which clearly isn't related to the scope of the patch.
run-commit-test shows no surprises: all passed but org.apache.hadoop.hdfs.TestFileStatus which I think has been broken for a while now.
I'll be committing this after formal review process is over.