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https://issues.apache.org/jira/browse/NUTCH-945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218798#comment-13218798
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Sujit Pal commented on NUTCH-945:
---------------------------------
Needed something along these lines, so did this and attaching the patch and new
files for this.
The multiple SOLR servers are specified on the bin/nutch solrindex command line
like so:
bin/nutch solrindex http://localhost:8983/solr -all (for single SOLR server)
bin/nutch solrindex http://localhost:8983/solr,http://localhost:8983/solr -all
(for distributing across 2 SOLR servers).
The default partitioner used is Hadoop's o.a.h.mapreduce...HashPartitioner. For
single server, the default partitioner used is a new NonPartitioningPartitioner
class (which also extends o.a.h.mapreduce...Partitioner class. Custom
partitioners can be specified in nutch-site.xml (or nutch-default.xml) by
specifying full class name of custom partitioner in solr.partitioner.class,
like so:
{quote}
<property>
<name>solr.partitioner.class</name>
<value>com.mycompany.nutch.indexer.solr.MurmurHashPartitioner</value>
<description/>
</property>
{quote}
I am also attaching the custom partitioner referenced above (SOLR 4.0 will use
this partitioning strategy per Markus).
I have tested this locally (non-distributed environment) against a set of 6211
documents. Here are the results, fwiw:
single server: 6211 records in 44.09s
2 servers using (default) hashmod partitioning: 3113 and 3098 records in 44.42s
2 servers using custom murmur partitioning: 3021 and 3190 records in 44.11s
> Indexing to multiple SOLR Servers
> ---------------------------------
>
> Key: NUTCH-945
> URL: https://issues.apache.org/jira/browse/NUTCH-945
> Project: Nutch
> Issue Type: Improvement
> Components: indexer
> Affects Versions: 1.2
> Reporter: Charan Malemarpuram
>
> It would be nice to have a default Indexer in Nutch, which can submit docs to
> multiple SOLR Servers.
> > Partitioning is always the question, when writing to multiple SOLR Servers.
> > Default partitioning can be a simple hashcode based distribution with
> > addition hooks to customization.
>
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