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https://issues.apache.org/jira/browse/SOLR-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McKinley updated SOLR-2112:
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Attachment: SOLR-2112-StreamingSolrj.patch
Here is a patch to add streaming. It adds this top level function to
solrServer:
{code:java}
QueryResponse queryAndStreamResponse( SolrParams params,
StreamingResponseCallback callback )
{code}
{code:java}
public interface StreamingResponseCallback {
public void documentRead( SolrDocument doc );
public void documentListInfo( long numFound, long start, Float maxScore );
}
{code}
This is implemented by hacking the BinaryResponseWriter (embedded) and
JavaBinCodec (http) to send events rather then write/read documents.
> Solr should support streaming response
> --------------------------------------
>
> Key: SOLR-2112
> URL: https://issues.apache.org/jira/browse/SOLR-2112
> Project: Solr
> Issue Type: New Feature
> Components: clients - java
> Reporter: Ryan McKinley
> Fix For: 4.0
>
> Attachments: SOLR-2112-StreamingSolrj.patch
>
>
> The solrj API should optionally support streaming documents.
> Rather then putting all results into a SolrDocumentList, sorlj should be able
> to call a callback function after each document is parsed. This would allow
> someone to call query.setRows( Integer.MAX_INT ) and get each result to the
> client without loading them all into memory.
> For starters, I think the important things to stream are SolrDocuments, but
> down the road, this could also stream other things (consider reading all
> terms from the index)
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