Static fields used throughout clustering code (Canopy, K-Means).
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Key: MAHOUT-11
URL: https://issues.apache.org/jira/browse/MAHOUT-11
Project: Mahout
Issue Type: Bug
Components: Clustering
Affects Versions: 0.1
Reporter: Dawid Weiss
I file this as a bug, even though I'm not 100% sure it is one. In the currect
code the information is exchanged via static fields (for example, distance
measure and thresholds for Canopies are static field). Is it always true in
Hadoop that one job runs inside one JVM with exclusive access? I haven't seen
it anywhere in Hadoop documentation and my impression was that everything uses
JobConf to pass configuration to jobs, but jobs are configured on a per-object
basis (a job is an object, a mapper is an object and everything else is
basically an object).
If it's possible for two jobs to run in parallel inside one JVM then this is a
limitation and bug in our code that needs to be addressed.
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