Running "ant model-jar" command to set up eclipse dev environment from the following wiki:
fails with the following message:
**/workspace/hive-trunk/metastore/build.xml:22: The following error occurred while executing this line:
**/workspace/hive-trunk/build-common.xml:112: Problem: failed to create task or type osfamily
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.