![]() If you add or delete a field from Solr’s schema, it’s strongly recommended to reindex. This type of change is usually only made during or because of a major upgrade. Is equivalent to changing field type properties. In addition to the types of schema changes described in the following sections, changing the schema version property Once theĭocuments are in Lucene, Solr’s schema has no control over the underlying data structure. Schema acts like a rulebook for indexing documents by telling Lucene how to interpret the data being sent. This is different from most database models where schemas are used. This means that there are many types of schema changes that cannot be reflected in the index simply by modifying When you add a field to Solr’s schema, theįield does not exist in Lucene’s index until a document that contains the field is indexed. When you deleteĪ field from Solr’s schema, it does not modify Lucene’s index in any way. ![]() Lucene does not use a schema, it is a Solr-only concept. Solr’s schema and the underlying Lucene index. To understand the general reason why reindexing is ever required, it’s helpful to understand the relationship between Solr simply has no way to implement the desired change without reindexing This is because many of the available options are onlyĪpplied during the indexing process. Changes that Require Reindex Schema ChangesĪll changes to a collection’s schema require reindexing. ![]() Reindexing is recommended during major upgrades, so in addition to covering what types of configuration changes should trigger a reindex, this section will also cover strategies for reindexing. It is strongly recommended that Solr users index their data in a repeatable, consistent way, so that the process can beĮasily repeated when the need for reindexing arises. However you got the data into the index the first time, you will run that process again. When we say "reindex", we mean, literally, There is no process in Solr for programmatically reindexing data. ![]() It’s important to be aware that many changes require reindexing, because there are times when not reindexingĬan have negative consequences for Solr as a system, or for the ability of your users to find what they are looking for. Upgrading Solr and some system configuration properties. These changes include editing properties of fields or field types adding fields, field types, or copy field rules There are several types of changes to Solr configuration that require you to reindex your data. How to Contribute to Solr Documentation.Authentication and Authorization Plugins.Monitoring Solr with Prometheus and Grafana.Adding Custom Plugins in SolrCloud Mode.RequestHandlers and SearchComponents in SolrConfig.Schema Factory Definition in SolrConfig.DataDir and DirectoryFactory in SolrConfig.Introduction to Scaling and Distribution.Migrating Rule-Based Replica Rules to Autoscaling Policies.SolrCloud Autoscaling Automatically Adding Replicas.Cross Data Center Replication Operations.SolrCloud with Legacy Configuration Files.Using ZooKeeper to Manage Configuration Files.Setting Up an External ZooKeeper Ensemble.SolrCloud Query Routing And Read Tolerance.SolrCloud Recoveries and Write Tolerance.Interpolation, Derivatives and Integrals.The Extended DisMax (eDismax) Query Parser.Uploading Structured Data Store Data with the Data Import Handler.Uploading Data with Solr Cell using Apache Tika.Understanding Analyzers, Tokenizers, and Filters.Working with External Files and Processes.Working with Currencies and Exchange Rates.Overview of Documents, Fields, and Schema Design.Using the Solr Administration User Interface.
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