And so the real testing begins.....

First run through of the ant tests with ant 1.7.1 and the following tests failed (along with JIRA's that help describe the failure):

HADOOP-7949 [junit] Test org.apache.hadoop.ipc.TestSaslRPC FAILED
MAPREDUCE-3357 [junit] Test org.apache.hadoop.filecache.TestMRWithDistributedCache FAILED
MAPREDUCE-2073 [junit] Test org.apache.hadoop.filecache.TestTrackerDistributedCacheManager FAILED
HBASE-3285 [junit] Test org.apache.hadoop.hdfs.TestFileAppend4 FAILED
MAPREDUCE-3594 [junit] Test org.apache.hadoop.streaming.TestUlimit FAILED
Too many open file [junit] Test org.apache.hadoop.mapred.TestCapacityScheduler FAILED

Increased the number of open files to fix the last test, chmod'd my home dir to resolve MAPREDUCE-2073 and run again.....