For the past couple of weeks, I've seen errors like this popping up on a lot of Hudson HDFS test-patch builds. It's always NoClassDefFoundError and I think it's also always occurring for some cross-project
class dependencies. Anyone have any ideas what's going on here? I thought at one point that it was Hudson specific, but I've actually run into it once or twice on a local build machine as well. The error is captured in this JIRA: https://issues.apache.org/jira/browse/MAPREDUCE-1275 I'm pointing it out via email since it also affects HDFS (see HDFS-455 recent test patch), so I think it's a Common problem, and it's really wasting a lot of Hudson test runs. -Todd
