While putting up patches for HADOOP-17169 <https://issues.apache.org/jira/browse/HADOOP-17169> I noticed that the unit tests in trunk, specifically in HDFS, are incredibly unstable. Every time I put up a new patch, 4-8 unit tests failed with failures that were completely unrelated to the patch. I'm pretty confident in that since the patch is simply changing variable names. I also ran the unit tests locally and they would pass (or fail intermittently).
Is there an effort to stabilize the unit tests? I don't know if these are bugs or if they're bad tests. But in either case, it's bad for the stability of the project. Eric