Hey, i have tried to make use of the UniqFieldsUpdateProcessorFactory in
order to achieve distinct values in multivalued fields. Example below:
<updateRequestProcessorChain name="uniq_fields">
<processor
class="org.apache.solr.update.processor.UniqFieldsUpdateProcessorFactory">
<lst name="fields">
<str>title</str>
<str>tag_type</str>
</lst>
</processor>
<processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>
<requestHandler name="/update" class="solr.UpdateRequestHandler">
<lst name="defaults">
<str name="update.chain">uniq_fields</str>
</lst>
</requestHandler>
However the data being is indexed one by one. This may happen, since a
document may will get an additional tag in a future update. Unfortunately in
order to ensure not having any duplicate tags, i was hoping, the
UpdateProcessorFactory is doing what i want to achieve. In order to actually
add a tag, i am sending an
"tag_type" :{"add":"foo"}, which still adds the tag, without questioning if
its already part of the field. How may i be able to achieve distinct values
on solr side?!
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