lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Upayavira ...@odoko.co.uk>
Subject Re: Adding documents in Solr plugin
Date Sat, 22 Jun 2013 11:48:07 GMT


On Sat, Jun 22, 2013, at 03:40 AM, Chris Hostetter wrote:
> 
> : This could be a very useful feature. To do it properly, you'd want some
> : new update syntax, extending that of the atomic updates. That is, a new
> : custom request handler could do it, but might now be the best way.
> 
> the biggest complexity to implementing this in a general way would be 
> dealing with multi-node indexes in SolrCloud
> 
> for single node indexes, the basic gist of what you'd want to do in a 
> custom handler would be something like...
> 
>    // you don't care about the DocList
>    DocSet docs = SolrIndexSearcher.execute(your query)
>    foreach docId in docs {
>      String docKey = fieldCache.lookup(docId)
>      SolrInputDocument newDoc;
>      newDoc.addField(uniqueKeyField, docKey)
>      newDoc.addField( ... your atomic update operation ...)
>      SolrCore.getUpdateProcessor().process(new AddDocCOmmand(newDoc));
>    }

And what makes it complex across a multinode cluster? You'd need a
method to push that query out to all shards, and then each shard would
do the above. You'd need a rule that the unique key cannot be changed,
otherwise the doc might need to switch shards, but that's probably the
case already. Is there more to it than that?

Upayavira

Mime
View raw message