With the recent release of Solr 8.0 you may be wondering if it is worth migrating to the new version and how to do it. Is it possible to upgrade your cluster without major downtime? Is it possible to upgrade to new version using rolling restarts? We will try to answer that question in this blog post.
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Lucene & Solr 8.0
It is a pleasure to inform that the new major release of Apache Lucene search library and Apache Solr search servers are now available. This release is numbered 8.0 and contains number of improvements and new features that should make every user consider an upgrade.
Read moreLucene and Solr 7.7.0
It is a pleasure to inform that the new version of Lucene library and Solr search server has been released. It is the next release from the 7.x branch and it is numbered 7.7.0. This release introduces fixes for the bugs found in the 7.6 version and new features.
Read moreSolrCloud and query execution control
With the release of Solr 7.0 and introduction of new replica types, in addition to the defa?ult NRT type the question appeared – can we control the queries and where they are executed? Can we tell Solr to execute the queries only on the PULL replicas or give TLOG replicas a priority? Let’s check that out.
Read moreSolrCloud – write and read tolerance
SolrCloud similar to most of the distributed systems is designed with some rules in mind. There are also rules that each distributed system is subject to. For example the CAP theorem tells that a system can’t achieve availability, data consistency and network partition split tolerance at the same time – you can have two out of three at most. Of course, in this blog entry, we will not be discussing principles of the distributed systems, but we will focus on write and read tolerance in SolrCloud.
Read moreSolr 7.6.0 – uninvertible fields
With the recent release of Solr 7.6.0 we got a new option for the fields and field types – the property called uninvertible. It allows us to control what Solr will do when it will require data in an uninverted format, so for example when using faceting or sorting. Let’s look into what happens with various settings of this new property.
Lucene and Solr 7.6.0
It is a pleasure to inform that the new version of Lucene library and Solr search server has been released. It is the next release from the 7.x branch and it is numbered 7.6.0. This release introduces fixes for the bugs found in the 7.5 version and new features. One of the features we like is the adding of the uninvertible option to fields and field type which allows us to control if the field can be uninverted.
Read moreLucene and Solr 7.5.0
It is a pleasure to inform that the new version of
Solr Text Tagger – Quick Look into Solr 7.4
We haven’t looked into any Solr functionalities on Solr.pl for a while so it is time to look into one of the new features – the text tagger. It works on the basis of Solr index and is able to check documents sent to a new handler and return occurrences of names with offsets and other metadata that we added to Solr index. However keep in mind that Solr Text Tagger doesn’t do any kind of natural language processing, so no what we will give it, that is what we can expect to get back.
Read moreLucene and Solr 6.6.5
It is a pleasure to inform that the new version of Lucene library and Solr search server has been released. It is another release from the 6.x branch and it is numbered 6.6.5. This release introduces critical security fixes found in Solr. We highly suggest upgrading your Solr instances.