MAPREDUCE-3583 causes build failures in HCAT often and fix for it is available in hadoop-core 1.1.0. Change dependency in build to it once it is available in maven repository.
HIVE-2646 would help to get there.
hadoop 1.0.2 branch has the fix for MAPREDUCE-3583(http://svn.apache.org/viewvc/hadoop/common/branches/branch-1.0.2/src/core/org/apache/hadoop/util/ProcfsBasedProcessTree.java) and is now available in maven. The attached patch changes hcat's hadoop dependency version from 1.0.1 to 1.0.2.
This issue is not related to HIVE-2646 anymore after we removed hive/external. So removing the link.
+1, Ran the unit tests suite and all the tests pass.
Committed to trunk and branch 0.4. Thanks Rohini.