It depends on what scope you want your unit tests to operate at. There is a class you might want to look into called MiniMRCluster if you are dead set on having as deep of tests as possible but you can still cover quite a bit with MRUnit and Junit4/Mockito.
Matt -----Original Message----- From: Frank Astier [mailto:fast...@yahoo-inc.com] Sent: Friday, August 26, 2011 1:30 PM To: common-user@hadoop.apache.org Subject: Hadoop in process? Hi - Is there a way I can start HDFS (the namenode) from a Java main and run unit tests against that? I need to integrate my Java/HDFS program into unit tests, and the unit test machine might not have Hadoop installed. I'm currently running the unit tests by hand with hadoop jar ... My unit tests create a bunch of (small) files in HDFS and manipulate them. I use the fs API for that. I don't have map/reduce jobs (yet!). Thanks! Frank This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited. All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware". Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying this e-mail or any attachment. The information contained in this email may be subject to the export control laws and regulations of the United States, potentially including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all applicable U.S. export laws and regulations.
