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https://issues.apache.org/jira/browse/MAHOUT-137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12722663#action_12722663
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Jeff Eastman commented on MAHOUT-137:
-------------------------------------
Here's some code (which depends upon the AbstractVector methods becoming
public) which encodes the class name in addition to the elements and is
vector-type agnostic.
{noformat}
public void readFields(DataInput in) throws IOException {
this.canopyId = in.readInt();
this.center = AbstractVector.readVector(in);
}
@Override
public void write(DataOutput out) throws IOException {
out.writeInt(canopyId);
AbstractVector.writeVector(out, computeCentroid());
{noformat}
> Convert Clustering Algs to use Vector Writable
> ----------------------------------------------
>
> Key: MAHOUT-137
> URL: https://issues.apache.org/jira/browse/MAHOUT-137
> Project: Mahout
> Issue Type: Improvement
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Fix For: 0.2
>
> Attachments: MAHOUT-137.patch, MAHOUT-137.patch, MAHOUT-137.patch
>
>
> All M/R jobs should use Vector writable instead of encoding and decoding
> strings. We can have a separate utility that converts serialized GSON,
> Strings, whatever into the appropriate vectors. See MAHOUT-136 and
> http://www.lucidimagination.com/search/document/6a55f260826fd77f/jira_commented_mahout_136_change_canopy_mr_implementation_to_use_vector_writable
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