Lucene and Solr 7.3.0

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 7.3.0. This release introduces fixes for the bugs found in the 7.2 version and new features, like performance imprevements when running on Java 9, confirmed support for Java 10 or automatic collection creation for time based data.

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Solr 7.2 – rebalancing replicas using UTILIZENODE

With the release of Solr 7.2 we got a new option in the Collections API – the ability to utilize a new or existing node of our cluster based on the autoscaling properties. It basically looks at the replicas placement and using the autoscaling rules for the cluster and collection allows us to automatically move replicas to a given node. Sounds nice in theory, so let’s look how it actually works.

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