If you're using GiraphJob, the mapper class should be set for you.
That's weird.
Avery
On 2/7/12 5:58 PM, David Garcia wrote:
That's interesting. Yes, I don't need native libraries. The problem I'm
having is that after I run job.waitForCompletion(..),
The job runs a mapper that is something other than GraphMapper. It
doesn't complain that a Mapper isn't defined or anything. It runs
something else. As I mentioned below, the map-class doesn't appear to be
defined.
On 2/7/12 7:50 PM, "Jakob Homan"<jgho...@gmail.com> wrote:
That's not necessarily a bad thing. Hadoop (not Giraph) has native
code library it can use for improved performance. You'll see this
message when running on a cluster that's not been deployed to use the
native libraries. If I follow what you wrote, most likely your work
project cluster is so configured. Unless you actively expect to have
the native libraries loaded, I wouldn't be concerned.
On Tue, Feb 7, 2012 at 5:46 PM, David Garcia<dgar...@potomacfusion.com>
wrote:
I am running into a weird error that I haven't seen yet (I suppose I've
been lucky). I see the following in the logging:
org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
In the job definition, the property "mapreduce.map.class" is not even
defined. For Giraph, this is usually set to
"mapreduce.map.class=org.apache.giraph.graph.GraphMapper"
I'm building my project with hadoop 0.20.204.
When I build the GiraphProject myself (and run my own tests with the
projects dependencies), I have no problems. The main difference is that
I'm using a Giraph dependency in my work project. All input is welcome.
Thx!!
-David
