Suppress HADOOP_HOME warnings.
Suppress HADOOP_HOME warnings.

mapr/shark,amplab/shark,vax11780/shark,lzshlzsh/shark,vax11780/shark,mattyb149/blinkdb,alabid/blinkdb,mattyb149/blinkdb,sameeragarwal/blinkdb_dev,sameeragarwal/blinkdb_dev,alabid/blinkdb,amplab/shark,sameeragarwal/blinkdb,mapr/shark,alabid/blinkdb,vax11780/shark,amplab/shark,lzshlzsh/shark,sameeragarwal/blinkdb_dev,sjyk/sampleclean,mattyb149/blinkdb,mapr/shark,sjyk/sampleclean,sameeragarwal/blinkdb,lzshlzsh/shark,sameeragarwal/blinkdb,sjyk/sampleclean