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I want to have auto-generate Long unique key in Solr cluster. I'm using IBM Watson Retrieve and Rank service and I tried the standard ways of Solr to have auto-generate mechanism (generate UUID, etc), but it's not working for Retrieve and Rank clusters. Maybe IBM is using old version of Solr or it's customized by IBM.

Who had a such a situation and how he/she fixed it?

Then you in advance.

Yengibar Manasyan
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1 Answers1

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Add the following code in your solrconfig.xml configuration file:

<updateRequestProcessorChain>
  <processor class="solr.UUIDUpdateProcessorFactory">
    <str name="fieldName">id</str>
  </processor>
  <processor class="solr.LogUpdateProcessorFactory" />
  <processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>

I'm using IBM Watson Retrieve and Rank too and it worked for me. I created my collection after adding this configuration. If you already have a collection, check this link to update an existing configuration.

a-ro
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