One of the configuration variables we can find in the solrconfig.xml file is maxBooleanClauses, which specifies the maximum number of boolean clauses that can be combined in a single query. The question is, do I have to worry about it when using filters in Solr ? Let’s try to answer that question without getting into Lucene and Solr source code.
lucene
Apache Lucene and Solr 3.5
Lucene Eurocon 2011 – day two
explain.solr.pl: Status
During the Lucene Eurocon 2011 conference we gave a talk about a tool that will enable you to analyze Solr search results. We promised, that the public version of the tool will be released soon. We would like to ensure that we are getting close to that moment. Right now we are focusing on the following things:
Lucene Eurocon 2011 – day one
As we wrote a few days ago we are back from this year Lucene Eurocon, which took place in Barcelona. Despite the fact that the videos will be available shortly, we decided to wrote something about those presentations we attended to.
Near future plans
Surely you noticed a decreased activity of solr.pl. But this is not related to preparations for winter sleep. We are not bored also. The reason is the hot period in relation to the project deadline, which we perform within our professional work. In addition, the rest of our free time is occupied by two subjects which are mentioned below.
Lucene and Solr 3.4
Today, we can enjoy another version of Lucene and Solr – release numbered 3.4. In the newest version there are a few functionalities worth looking at.
Deep paging problem
Imagine the following problem – we have an application that expects Solr to return the results sorted on the basis of some field. Those results will be than paged in the GUI. However, if the person using the GUI application immediately selects the tenth, twentieth, or fiftieth page of search results there is a problem – the wait time. Is there anything we can do about this? Yes, we can help Solr a bit.
Lucene and Solr 3.3
Only a few weeks passed since the release of 3.2 version Lucene and Solr (change list) and today we have another release numbered 3.3. In the newest version there are a few functionalities worth looking at, especially when we talk about Solr.
When to commit?
The question I asked myself recently what seems to be one of those for which the response should be quick and painless. So, when to send the commit command to Solr (or Lucene)? Despite the simplicity of the questions, the answer is not clear, at least in my opinion.