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yonik

Got SolrCloud? Get an all-expense paid trip to ApacheCon!

Solr Cloud has garnered a ton of interest lately. In light of the planned release of Solr 4.0 in September, the community would like to hear from someone who has…
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Solr 4 preview: SolrCloud, NoSQL, and more

The first alpha release of Solr 4 is quickly approaching, bringing powerful new features to enhance existing Solr powered applications, as well as enabling new applications by further blurring the lines between…
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Advanced Filter Caching in Solr

Advanced Filter Caching is a relatively new feature in Solr, available in version 3.4 and above. It allows precise control over how Solr handles filter queries in order to maximize…
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MurmurHash3 for Java

Background I needed a really good hash function for the distributed indexing we’re implementing for Solr. Since it will be used for partitioning documents, it needed to be really high…
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Solr's Realtime Get

Solr took another step toward increasing its NoSQL datastore capabilities, with the addition of realtime get. Background As readers probably know, Lucene/Solr search works off of point-in-time snapshots of the…
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Solr relevancy function queries

Lucene’s default ranking function uses factors such as tf, idf, and norm to help calculate relevancy scores. Solr has now exposed these factors as function queries. docfreq(field,term) returns the number…
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Solr Result Grouping / Field Collapsing Improvements

I previously introduced Solr’s Result Grouping, also called Field Collapsing, that limits the number of documents shown for each “group”, normally defined as the unique values in a field or…
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Indexing JSON in Solr 3.1

Solr has been able to produce JSON results for a long time, by adding wt=json to any query. A new capability has recently been added to allow indexing in JSON,…
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Solr Result Grouping / Field Collapsing

Result Grouping, also called Field Collapsing, has been committed to Solr! This functionality limits the number of documents for each “group”, usually defined by the unique values in a field…
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CSV output for Solr

Solr has been able to slurp in CSV for quite some time, and now I’ve finally got around to adding the ability to output query results in CSV also. The…
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