Getting an IndexReader from a committed IndexWriter
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Key: LUCENE-1637
URL: https://issues.apache.org/jira/browse/LUCENE-1637
Project: Lucene - Java
Issue Type: Improvement
Components: Index
Affects Versions: 2.9
Reporter: Shay Banon
I just had a look at the job done in IndexWriter in order to get an IndexReader
with all the current ongoing changes done using the IndexWriter. This feature
is very useful, and I was wondering if another feature, which (I think) is
simple to implement (compared to the previous one) might make sense.
Many times, an application opens an IndexWriter, does whatever changes it
does, and then commits the changes. It would be nice to get an IndexReader
(read only one is fine) that corresponds to the committed (or even closed)
IndexWriter. This will allow for a cache of IndexReader that is already used to
be updated with a fresh IndexReader, without the need to reopen one (which
should be slower than opening one based on the IndexWriter information). The
main difference is the fact that the mentioned IndexReader could still be
reopened without the need to throw an AlreadyClosedException.
More information can be found here:
http://www.nabble.com/Getting-an-IndexReader-from-a-committed-IndexWriter-td23551978.html
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