An index optimization operation allows you to reduce the number of segments in an index, thereby increasing search performance in the index.
To perform this operation, there is an overload that takes the MergeOptions instance as a parameter. In the MergeOptions class, there is a property for specifying a cancellation object and a property for specifying whether to perform the operation asynchronously. By default, the operation is performed synchronously.
The following example demonstrates how to perform the index optimization.
C#
stringindexFolder=@"c:\MyIndex\";stringdocumentsFolder1=@"c:\MyDocuments1\";stringdocumentsFolder2=@"c:\MyDocuments2\";stringdocumentsFolder3=@"c:\MyDocuments3\";// Creating an index in the specified folderIndexindex=newIndex(indexFolder);index.Add(documentsFolder1);// Indexing documents from the specified folderindex.Add(documentsFolder2);// Each call to Add creates at least one new segment in the indexindex.Add(documentsFolder3);MergeOptionsoptions=newMergeOptions();options.Cancellation=newCancellation();// Creating cancellation object to be able to cancel the operationoptions.Cancellation.CancelAfter(100000);// Setting maximum duration of the operation to 100 seconds// Merging segments of the indexindex.Optimize(options);
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