Rob, "Rob Staveley (Tom)" <[EMAIL PROTECTED]> wrote on 05/01/2007 06:18:10: > I'm attempting to delete documents matching a term on a ParallelReader and > got the error message above, presumably while adding directories to the > ParallelReader.
See the javadocs for ParallelReader - http://lucene.apache.org/java/docs/api/org/apache/lucene/index/ParallelReader.html - ------------------- An IndexReader which reads multiple, parallel indexes. Each index added must have the same number of documents, but typically each contains different fields. Each document contains the union of the fields of all documents with the same document number. When searching, matches for a query term are from the first index added that has the field. This is useful, e.g., with collections that have large fields which change rarely and small fields that change more frequently. The smaller fields may be re-indexed in a new index and both indexes may be searched together. Warning: It is up to you to make sure all indexes are created and modified the same way. For example, if you add documents to one index, you need to add the same documents in the same order to the other indexes. Failure to do so will result in undefined behavior. ------------------- In other words, ParallelReader operates under the assumption that you split your index to several indexes, [**] by fields [**] , so each index has exactly the same number of documents. > > I'm puzzled, because I don't need to have the same maxDoc (and numDoc) in > index directories for a ParallelMultiSearcher, so what's the deal here? > Should I delete serially... one index at a time? MultiSearcher and ParallelMultiReader are different - they operate against a set of Searchables (not a set of Readers) and aggregate results from those searchers. They operate under the assumption that you split your indexed data [**] by documents [**] , so that there are distinct documents in each index. Hope this helps, Doron --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
