As you might know, a Lucene index is built of one or more segments. In general, a segment is a write-once, read-many data structure, which means that once written it won't be updated (only some parts of it will be, such as information about a deleted document). Segment merging is a process of combining multiple segments to a new one to reduce the overall number of segments the index is built of. The reason Lucene does this is because of performance—the smaller the number of segments, the better the search performance is. On the other hand, segment merge is a resource-intensive process as it requires you to read the old segments and write the new ones. Because of all this, it is good to know how to tune segment merging for our own purposes and this recipe will show you how to do that.
Solr Cookbook - Third Edition
By :
Solr Cookbook - Third Edition
By:
Overview of this book
Table of Contents (18 chapters)
Solr Cookbook Third Edition
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Apache Solr Configuration
Indexing Your Data
Analyzing Your Text Data
Querying Solr
Faceting
Improving Solr Performance
In the Cloud
Using Additional Functionalities
Dealing with Problems
Real-life Situations
Index
Customer Reviews