include nutch jar in mapred jobs
--------------------------------
Key: NUTCH-209
URL: http://issues.apache.org/jira/browse/NUTCH-209
Project: Nutch
Type: Improvement
Versions: 0.8-dev
Reporter: Doug Cutting
Priority: Minor
Fix For: 0.8-dev
I just added a simple way in Hadoop to specify the job jar file. When
constructing a JobConf one can specify a class whose containing jar is set to
be the job's jar. To take advantage of this in Nutch, we could add a util
class:
public class NutchJob extends JobConf {
public NutchJob(Configuration conf) {
super(conf, NutchJob.class);
}
}
Then change all of the places where we construct a JobConf to instead construct
a NutchJob.
Finally, we should add an ant target called 'job' that constructs a job jar,
containing all of the classes and the plugins, and make this the default
target. This way all Nutch code can be distributed with each job as it is
submitted, and daemons would only need to be restarted when Hadoop code is
updated.
Does this sound reasonable?
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