Good points -- I'll update! Thanks Grant.
Mike
Grant Ingersoll wrote:
Couple of notes:
I would call out the Fieldable change
I would also add something to the effect that the next release, 2.9,
will be a deprecation release (or whatever you want to call it) and
that 3.0 will require Java 1.5. I don't think we can start
spreading that news too soon.
-Grant
On Sep 30, 2008, at 5:08 AM, Michael McCandless wrote:
OK here's the new version with suggestions folded in:
Release 2.4.0 of Lucene is now available!
Many new features, fixes and optimizations have happened since 2.3,
including:
* New InstantiatedIndex (contrib/instantiated): RAM-based index that
enables much faster searching than RAMDirectory.
* New IndexWriter constructors now default autoCommit to false.
* New commit() method in IndexWriter lets you control when changes
are made visible & permanent in the index.
* A machine or OS crash, or power loss, while IndexWriter is writing
to an index will no longer corrupt the index.
* TimeLimitedCollector adds timeout to searches
* Delete documents by Query in IndexWriter
* Pure boolean indexing (no frequency, positions nor payloads are
indexed) using Field.setOmitTf()
* A new Directory implementation, NIOFSDirectory, using java.nio's
APIs to allow multiple threads to read from the same open file
without locking.
* IndexWriter.expungeDeletes() reclaims disk space from deleted
documents by merging away segments that have deletions.
* All filters now return a DocIdSet instead of java.util.BitSet,
making filters more efficient and flexible.
* IndexReader can be opened with new readOnly=true mode, which gives
better performance in a multi-threaded environment.
The detailed changes are here:
<URL to 2.4 Changes.html>
Lucene 2.4 includes index format changes that are not readable by
older
versions of Lucene. Lucene 2.4 can both read and update older Lucene
indexes. Adding to an index with an older format will cause it to be
converted to the newer format.
Binary and source distributions are available at
http://www.apache.org/dyn/closer.cgi/lucene/java/
Lucene artifacts are also available in the Maven2 repository at
http://repo1.maven.org/maven2/org/apache/lucene/
Mike
Otis Gospodnetic wrote:
Looks good to me!
Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
----- Original Message ----
From: Michael McCandless <[EMAIL PROTECTED]>
To: java-dev@lucene.apache.org
Sent: Monday, September 29, 2008 3:00:17 PM
Subject: draft 2.4 announcement
Here's my current draft -- any feedback?
Release 2.4.0 of Lucene is now available!
Many new features, fixes and optimizations have happened since 2.4,
including:
* New IndexWriter constructors now default autoCommit to false.
* New commit() method in IndexWriter, lets you control when changes
are made visible & permanent in the index.
* A machine or OS crash, or power loss, while IndexWriter is
writing
to an index should no longer corrupt the index (LUCENE-1044).
* TimeLimitedCollector adds timeout to searches
* Delete documents by Query in IndexWriter
* Pure boolean indexing (no frequency, positions nor payloads are
indexed) using Field.setOmitTf()
* A new Directory implementation, NIOFSDirectory, using java.nio's
APIs to allow multiple threads to read from the same open file
without locking.
* IndexWriter.expungeDeletes() reclaims disk space from deleted
documents by merging away segments that have deletions.
* All filters now return a DocIdSet instead of java.util.BitSet,
making filters more efficient and flexible.
* IndexReader can be opened with new readOnly=true mode, which
gives
better performance in a multi-threaded environment.
The detailed changes are here:
Lucene 2.4 includes index format changes that are not readable by
older
versions of Lucene. Lucene 2.4 can both read and update older
Lucene
indexes. Adding to an index with an older format will cause it
to be
converted to the newer format.
Binary and source distributions are available at
http://www.apache.org/dyn/closer.cgi/lucene/java/
Lucene artifacts are also available in the Maven2 repository at
http://repo1.maven.org/maven2/org/apache/lucene/
Mike
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Grant Ingersoll
Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ
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