Web / Apache Solr Interview questions

Define analyzer in Solr?

An analyzer is the pipeline Solr runs over text to convert raw input into a stream of indexable or searchable tokens. It is attached to a field type and can differ for indexing and for querying.

An analyzer is made up of exactly one tokenizer, which splits text into initial tokens, followed by zero or more token filters, which modify that stream, for example lowercasing, removing stop words, or applying stemming.

Choosing the right analyzer chain is what makes searches like "running" match "run" and "USA" match "U.S.A." even though the stored text differs from the query text.

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An analyzer chain must contain exactly how many tokenizers? One

✓ Correct! Well done.

Zero or more

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Exactly two

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Can index-time and query-time analyzers differ for the same field? Yes, they can be configured separately

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No, Solr forces them to be identical

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What is a Solr collection? What is highlighting in Solr search results? How do you optimize Solr for high-throughput near real-time indexing? What is a Solr core? List the ways to import data into Solr? How do you apply faceting in a Solr query? What is a filter in the Solr analysis chain? Explain the execution flow of an atomic update in Solr? What is Apache Solr? What are the types of fields in Solr? What is an inverted index in Solr? How do you connect to Solr using SolrJ? What is the DataImportHandler in Solr? What are the types of Solr request handlers? Define analyzer in Solr? Describe tokenizer in Solr? What is SolrCloud? What is the purpose of managed-schema in Solr? What is the purpose of solrconfig.xml? What is the purpose of a query parser in Solr?

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