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Question:how to Updating Data in solr?
You may have noticed that even though the file solr.xml has now been POSTed to the server twice, you still only get 1 result when searching for "solr". This is because the example schema.xml specifies a "uniqueKey" field called "id". Whenever you POST commands to Solr to add a document with the same value for the uniqueKey as an existing document, it automatically replaces it for you. You can see that that has happened by looking at the values for numDocs and maxDoc in the "CORE"/searcher section of the statistics page...
numDocs represents the number of searchable documents in the index (and will be larger than the number of XML files since some files contained more than one
). maxDoc may be larger as the maxDoc count includes logically deleted documents that have not yet been removed from the index. You can re-post the sample XML files over and over again as much as you want and numDocs will never increase, because the new documents will constantly be replacing the old.
Go ahead and edit the existing XML files to change some of the data, and re-run the java -jar post.jar command, you'll see your changes reflected in subsequent searches.
Sep 13, 2013
Sep 12, 2013
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