Interview Questions.

Q1. What Is The Use Of Stats.Area?

It is used to generate statistics over the results of arbitrary numeric features.

Q2. What Is Field Analyzer?

Working with textual records in Solr, Field Analyzer critiques and assessments the filed textual content and generates a token circulate. The pre-procedure of analyzing of input text is executed on the time of searching or indexing and at question time. Most Solr programs use Custom Analyzers described by means of customers. Remember, every Analyzer has best one Tokenizer.

Q3. What Is Highlighting?

Highlighting refers to the fragmentation of files matching the person’s query included within the query response. These fragments are then highlighted and positioned in a unique phase, which is utilized by clients and customers to offer the snippets. Solr includes some of highlighting utilities having manipulate over distinct fields. The highlighting utilities may be referred to as by way of Request Handlers and reused with trendy question parsers.

Q4. What Data Is Specified By Schema?

Schema proclaims:

how to index and seek each field?

What varieties of fields are to be had?

What fields are required?

What area should be used because the particular/number one key?

Q5. Which Command Is Used To Start Solr In Foreground?

$ bin/solr start –f is used to start Solr in foreground.

Q6. How To Shut Down Apache Solr?

Solr is shut down from the same terminal wherein it become launched. Click Ctrl+C to close it down.

Q7. What Is Apache Lucene?

Supported via Apache Software Foundation, Apache Lucene is a loose, open-supply, excessive-performance text seek engine library written in Java with the aid of Doug Cutting. Lucence allows complete-featured looking, highlighting, indexing and spellchecking of files in numerous codecs like MS Office docs, HTML, PDF, text doctors and others.

Q8. What Is Solrcloud?

Apache Solr allows fault-tolerant, excessive-scalable searching competencies that allow users to set up a incredibly-to be had cluster of Solr servers. These skills are well revered as SolrCloud.

Q9. What File Contains Configuration For Data Directory?

Solrconfig.Xml record includes configuration for facts listing.

Q10. Define Dynamic Fields?

Dynamic Fields are a useful feature if users by means of any chance forget about to define one or greater fields. They allow top notch flexibility to index fields which have no longer been explicitly defined inside the schema.

Q11. How To Install Solr?

The 3 steps of Installation are:

Server-related documents, e.G. Tomcat or start.Jar (Jetty).

Solr webapp as a .Battle.

Solr Home which incorporates the data listing and configuration files.

Q12. What Are The Advantages And Disadvantages Of Standard Query Parser?

Also called Lucence Parser, the Solr trendy query parser permits customers to specify specific queries through a sturdy syntax. However, the parser’s syntax is susceptible to many syntax errors not like other error-unfastened query parsers like DisMax parser.

Q13. What File Contains Definition Of The Field Types And Fields Of Documents?

Schema.Xml record consists of definition of the field kinds and fields of files.

Q14. What Is The Use Of Field Type?

Field type defines how Solr might interpret records in a area and the way that area can be queried.

Q15. What Is Request Handler?

When a consumer runs a seek in Solr, the quest query is processed by means of a request handler. SolrRequestHandler is a Solr Plugin, which illustrates the common sense to be executed for any request.Solrconfig.Xml file contains numerous handlers (containing some of instances of the equal SolrRequestHandler magnificence having special configurations).

Q16. What Are The Features Of Apache Solr?

Allows Scalable, excessive performance indexing Near real-time indexing.

Standards-based totally open interfaces like XML, JSON and HTTP.

Flexible and adaptable faceting.

Advanced and Accurate complete-text search.

Linearly scalable, car index replication, auto failover and recuperation.

Allows concurrent searching and updating.

Comprehensive HTML administration interfaces.

Provides go-platform answers which might be index-compatibleFind out how Apache Solr works flawlessly with Hadoop in this weblog put up.

Q17. What All Information Is Specified In Field Type?

A field type includes four kinds of information:

Name of discipline type.

Field attributes.

An implementation magnificence name.

If the sector type is Text Field , an outline of the sphere evaluation for the sector type.

Q18. Name The Basic Field Types In Solr?

Date.

Long

double

textual content

float

Q19. What Is Phonetic Filter?

Phonetic filter out creates tokens using one of the phonetic encoding algorithms within the org.Apache.Commons.Codec.Language package.

Q20. Which Syntax Is Used To Stop Solr?

$ bin/solr stop -p 8983 is used to prevent Solr.

Q21. Explain Faceting In Solr.?

As the call indicates, Faceting is the arrangement and categorization of all seek outcomes primarily based on their index phrases. The method of faceting makes the searching task smoother as users can search for the exact outcomes.

Q22. What Is Copying Field?

It is used to explain a way to populate fields with data copied from some other area.

Q23. What Are The Most Common Elements In Solrconfig.Xml?

Search additives

Cache parameters

Data directory vicinity

Request handlers

Q24. Name Different Types Of Highlighters?

There are 3 highlighters in Solr:

Standard Highlighter : offers precise suits even for advanced queryparsers.

FastVector Highlighter : Though much less superior than Standard Highlighter, it works higher for extra languages and helps Unicode breakiterators.

Postings Highlighter : Much more particular, efficient and compact than the above vector one however beside the point for a more quantity of query terms.

Q25. Give The Syntax To Start The Server.?

$ bin/solr start is used to begin the server.

Q26. What Syntax Is Used To Check Whether Solr Is Currently Running Or Not?

$ bin/solr reputation is used to test Solr jogging popularity.

Q27. What Is Apache Solr?

Apache Solr is a standalone full-textual content search platform to perform searches on more than one websites and index documents the use of XML and HTTP. Built on a Java Library known as Lucence, Solr helps a wealthy schema specification for a extensive variety and offers flexibility in handling different document fields. It additionally consists of an in depth seek plugin API for growing custom search behavior.

Q28. What Command Is Used To See How To Use The Bin/solr Script?

Execute $ bin/Solr –helpto see a way to use the bin/Solr script.

Q29. What Are The Important Configuration Files Of Solr?

Solr supports  important configuration files:

solrconfig.Xml.

Schema.Xml

Q30. What Is The Use Of Tokenizer?

It is used to break up a stream of text into a sequence of tokens, where each token is a subsequence of characters in the text. The token produced are then passed through Token Filters which could add, eliminate or update the tokens. Later,that field is listed by using the resulting token flow.