Mahout 0.9 does not support Hadoop 2x. Period... M-1329 is not part of Mahout 0.9 and has been fixed for 1.0 (see the Fix version in the JIRA)
If u wanna run Mahout on Hadoop 2x, work off of present trunk (not 0.9 codebase). On Thu, Aug 21, 2014 at 6:55 PM, Wei Zhang <w...@us.ibm.com> wrote: > > > Hello, > > After a system upgrade, we have a Hadoop 2.5.0 cloud instance. We are > trying to run Mahout on top of it. We are using Mahout 0.9 (downloaded from > http://mahout.apache.org/general/downloads.html ) > > https://issues.apache.org/jira/browse/MAHOUT-1329 indicates Mahout > supports > Hadoop 2.2.0 > > But even with mvn clean install -Dhadoop2.version=2.2.0 -DskipTests=true, > it doesn't appear Hadoop 2.x jar is downloaded anywhere (i.e., there is > only Hadoop 1.2.1 jar downloaded, which is what the pom.xml dictates). > > Further, a simple HDFS I/O call would fail (i.e., creating an HDFS file). > It seems Hadoop 2.2.0 is not quite compatible with Mahout 0.9 > > My question is: > (1) Does Mahout support Hadoop 2.5.0 or should I check out the code from > git (as suggested at > http://mahout.apache.org/developers/buildingmahout.html) in order to get a > Hadoop 2.x friendly Mahout ? > > Thanks! > > Wei
