[jira] [Commented] (SOLR-13289) Support for BlockMax WAND

2020-05-14 Thread Gregg Donovan (Jira) 


[ 
https://issues.apache.org/jira/browse/SOLR-13289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17107615#comment-17107615
 ] 

Gregg Donovan commented on SOLR-13289:
--

We've been using 
[ExternalFileField|https://lucene.apache.org/solr/guide/8_5/working-with-external-files-and-processes.html#the-externalfilefield-type]
 for non-index ranking signals. Is it possible to use WAND with 
ExternalFileField, as is? Or would ExternalFileField need to be changed to 
provide max impacts per block? FeatureField could work, but ExternalFileField 
is quite useful for changing ranking signals without requiring a reindex.

> Support for BlockMax WAND
> -
>
> Key: SOLR-13289
> URL: https://issues.apache.org/jira/browse/SOLR-13289
> Project: Solr
>  Issue Type: New Feature
>Reporter: Ishan Chattopadhyaya
>Assignee: Tomas Eduardo Fernandez Lobbe
>Priority: Major
> Attachments: SOLR-13289.patch, SOLR-13289.patch
>
>  Time Spent: 3h 40m
>  Remaining Estimate: 0h
>
> LUCENE-8135 introduced BlockMax WAND as a major speed improvement. Need to 
> expose this via Solr. When enabled, the numFound returned will not be exact.



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[jira] [Commented] (SOLR-13289) Support for BlockMax WAND

2020-01-28 Thread Gregg Donovan (Jira) 


[ 
https://issues.apache.org/jira/browse/SOLR-13289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17025286#comment-17025286
 ] 

Gregg Donovan commented on SOLR-13289:
--

{quote}This feature currently doesn't work in case of faceting(this is 
expected), grouping.{quote}

Will WAND cause faceting to break entirely? Or will the counts for facets just 
be inexact?

{quote}as same minExactHits is shared across shard. so, actual minExactHits is 
shardCount*minExactHits{quote}
Perhaps it would be worth having an additional parameter for a 
perShardExactHits? E.g. if we're requesting the top 1000 hits across 64 shards, 
we'd likely be fine with WAND getting the top, say, 150 per shard.


> Support for BlockMax WAND
> -
>
> Key: SOLR-13289
> URL: https://issues.apache.org/jira/browse/SOLR-13289
> Project: Solr
>  Issue Type: New Feature
>Reporter: Ishan Chattopadhyaya
>Assignee: Ishan Chattopadhyaya
>Priority: Major
> Attachments: SOLR-13289.patch, SOLR-13289.patch
>
>
> LUCENE-8135 introduced BlockMax WAND as a major speed improvement. Need to 
> expose this via Solr. When enabled, the numFound returned will not be exact.



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