While looking at
BIGTOP-831, turned out that the way Bigtop calls maven build / site:site generation causes the errors like this:
[ERROR] Exit code: 1 - /home/user/jenkins/workspace/BigTop-RPM/label/centos-6-x86_64-HAD-1-buildbot/bigtop-repo/build/hadoop/rpm/BUILD/hadoop-2.0.2-alpha-src/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/source/JvmMetricsInfo.java:31: error: unmappable character for encoding ANSI_X3.4-1968
[ERROR] JvmMetrics("JVM related metrics etc."), // record info??
Making the whole hadoop-common to use UTF-8 fixes that and seems in general good thing to me.
Attaching first version of patch for review.
Original issue was observed on openjdk 7 (x86-64).