There are two weird errors that are cropping up in CI. One is the UTF-8 error mentioned above. The other is an error in TestDirectBuffers. I am going to keep an eye on these problems, which may be JVM specific or related to the recent updates on the EC2 server for ci.bigdata.com.
I do not see the problems in the main branch build, so this is probably related to Java 7. The question is whether it is the Java 7 source/target for the compiler or something else. Note that we are using Java 6 for the main branch build, so it could easily be a Java 7 specific thing.