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by Andrea Gazzarini
Apache Solr Essentials
Apache Solr Essentials
Table of Contents
Apache Solr Essentials
Credits
About the Author
Acknowledgments
About the Reviewers
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Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
1. Get Me Up and Running
Installing a standalone Solr instance
Prerequisites
Downloading the right version
Setting up and running the server
Setting up a Solr development environment
Prerequisites
Importing the sample project of this chapter
Understanding the project structure
Different ways to run Solr
Background server
Integration test server
What do we have installed?
Solr home
solr.xml
schema.xml
solrconfig.xml
Other resources
Troubleshooting
UnsupportedClassVersionError
The "Failed to read artifact descriptor" message
Summary
2. Indexing Your Data
Understanding the Solr data model
The document
The inverted index
The Solr core
The Solr schema
Field types
The text analysis process
Char filters
Tokenizers
Token filters
Putting it all together
Some example field types
String
Numbers
Boolean
Date
Text
Other types
Fields
Static fields
Dynamic fields
Copy fields
Other schema sections
Unique key
Default similarity
Solr indexing configuration
General settings
Index configuration
Update handler and autocommit feature
RequestHandler
UpdateRequestProcessor
Index operations
Add
Sending add commands
Delete
Commit, optimize, and rollback
Extending and customizing the index process
Changing the stored value of fields
Indexing custom data
Troubleshooting
Multivalued fields and the copyField directive
The copyField input value
Required fields and the copyField directive
Stored text is immutable!
Data not indexed
Summary
3. Searching Your Data
The sample project
Querying
Search-related configuration
Query analyzers
Common query parameters
Field lists
Filter queries
Query parsers
The Solr query parser
Terms, fields, and operators
Boosts
Wildcards
Fuzzy
Proximity
Ranges
The Disjunction Maximum query parser
Query Fields
Alternative query
Minimum should match
Phrase fields
Query phrase slop
Phrase slop
Boost queries
Additive boost functions
Tie breaker
The Extended Disjunction Maximum query parser
Fielded search
Phrase bigram and trigram fields
Phrase bigram and trigram slop
Multiplicative boost function
User fields
Lowercase operators
Other available parsers
Search components
Query
Facet
Facet queries
Facet fields
Facet ranges
Pivot facets
Interval facets
Highlighting
Standard highlighter
Fast vector highlighter
Postings highlighter
More like this
Other components
Search handler
Standard request handler
Search components
Query parameters
RealTimeGetHandler
Response output writers
Extending Solr
Mixing real-time and indexed data
Using a custom response writer
Troubleshooting
Queries don't match expected documents
Mismatch between index and query analyzer
No score is returned in response
Summary
4. Client API
Solrj
SolrServer – the Solr façade
Input and output data transfer objects
Adds and deletes
Search
Other bindings
Summary
5. Administering and Tuning Solr
Dashboard
Physical and JVM memory
Disk usage
File descriptors
Logging
Core Admin
Java properties and thread dump
Core overview
Caches
Cache life cycles
Cache sizing
Cached object life cycle
Cache stats
Types of cache
Filter cache
Query Result cache
Document cache
Field value cache
Custom cache
Query handlers
Update handlers
JMX
Summary
6. Deployment Scenarios
Standalone instance
Shards
Master/slaves scenario
Shards with replication
SolrCloud
Cluster management
Replication factor, leaders, and replicas
Durability and recovery
The new terminology
Administration console
Collections API
Distributed search
Cluster-aware index
Summary
7. Solr Extensions
DataImportHandler
Data sources
Documents, entities, and fields
Transformers
Entity processors
Event listeners
Content Extraction Library
Language Identifier
Rapid prototyping with Solaritas
Other extensions
Clustering
UIMA Metadata Extraction Library
MapReduce
Summary
8. Contributing to Solr
Identifying your needs
An example – SOLR-3191
Subscribing to mailing lists
Signing up on JIRA
Setting up the development environment
Version control
Code style
Checking out the code
Creating the project in your IDE
Making your changes
Creating and submitting a patch
Other ways to contribute
Documentation
Mailing list moderator
Summary
Index
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