[#LUCENE-1030] "Read-only" IndexReaders

Lucene - Java

"Read-only" IndexReaders

Created: 17/Oct/07 06:32 PM Updated: 22/Sep/08 06:47 PM

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This issue is related to:

~~LUCENE-743~~ IndexReader.reopen()

Lucene Fields:	New
Resolution Date:	22/Sep/08 06:47 PM

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IndexReaders are able to perform certain write operations on an index (setNorm(), deleteDocument()). This makes issues like ~~LUCENE-743~~ more complicated and also duplicate code for acquiring locks and write transactions is necessary.

Therefore we should make IndexReaders "read-only" in the future. However, we have to find a good solution to support setting norms and deleting documents by docid with the IndexWriter. See related discussions in ~~LUCENE-743~~ and http://www.gossamer-threads.com/lists/lucene/java-dev/52017.

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Michael McCandless added a comment - 22/Sep/08 06:47 PM

Read-only IndexReaders were added in 2.4 (~~LUCENE-1329~~).