What is the most important change in 4.x version of Apache Solr? I think there are many of them but Solr Cloud is definitely something that changed a lot in Solr architecture. Until now, bigger installations suffered from single point of failure (SPOF) – there was only the one master server and when this server was going down, the whole cluster lose the ability to receive new data. Of course you could go for multiple masters, where a single master was responsible for indexing some part of the data, but still, there was a SPOF present in your deployment. Even if everything worked, due to commit interval and the fact that slave instances checked the presence of new data periodically, the solution was far from ideal – the new data in the cluster appeared minutes after commit.
Solr
Autocomplete on multivalued fields using highlighting
One of the recent topics I came across was auto complete feature based on Solr multi-valued fields (for example, this question was asked on Stack Overflow). Let’s look what possibilities we have.
Developing Your Own Solr Filter part 2
In the previous entry “Developing Your Own Solr Filter” we’ve shown how to implement a simple filter and how to use it in Apache Solr. Recently, one of our readers asked if we can extend the topic and show how to write more than a single token into the token stream. We decided to go for it and extend the previous blog entry about filter implementation.
Apache Lucene and Solr 4.1
Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbred 4.1. This is a major release both for Apache Lucene and Apache Solr.
Solr 4.1: SolrCloud – multiple shards on the same Solr node
We would like to discuss another new feature that will be a part of upcoming Solr 4.1 – the ability to place more than one shard of a given collection on a single Solr instance. As you may know this is not possible currently. So, lets look how this works by comparing Solr 4.1 to 4.0.
Apache Lucene and Solr 3.6.2
Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbred 3.6.2. This is a minor bugfix release concentrated mainly on bugfixes in Apache Lucene library.
Solr 4.0 Cookbook
Solr 4.1: Stored fields compression
Despite the fact that Lucene and Solr 4.0 is still very fresh we decided that its time to take a look at the changes in the approaching 4.1 version. One of those changes will be stored fields compression to decrease the size of the index size, when we use such fields. Let’s take a look and see how that works.
Apache Lucene and Solr 4.0 released!
After three years of development we can finally say that Apache Lucene library and Solr server 4.0 have been released.
Apache Lucene and Solr 4.0 beta
We are getting closer and closer to the final release of Apache Lucene and Solr 4.0 as a few minutes ago 4.0 beta of Apache Lucene library and Solr search servers were released.