Does the IndexWriter.mergeFactor remain the same effect on the RAM use after the introduce of IndexWriter.minMergeDocs?
The minMergeDocs was introduced into IndexWriter(Revision 1.21 in cvs) in order to control the number of Documents merged in RAMDirectory independently of the mergeFactor (see http://issues.apache.org/bugzilla/show_bug.cgi?id=23754). And the IndexWriter.maybeMergeSegments changed from then on: @@ -375,7 +385,7 @@ /** Incremental segment merger. */ private final void maybeMergeSegments() throws IOException { - long targetMergeDocs = mergeFactor; + long targetMergeDocs = minMergeDocs; But the comment of mergeFactor remains: The following is the comment of IndexWriter.mergeFactor in the 1.2 RC6: /** Determines how often segment indexes are merged by addDocument(). With * smaller values, less RAM is used while indexing, and searches on * unoptimized indexes are faster, but indexing speed is slower. With larger * values more RAM is used while indexing and searches on unoptimized indexes * are slower, but indexing is faster. Thus larger values (> 10) are best * for batched index creation, and smaller values (< 10) for indexes that are * interactively maintained. * * <p>This must never be less than 2. The default value is 10.*/ public int mergeFactor = 10; and now, it's in 1.4.3: /** Determines how often segment indices are merged by addDocument(). With * smaller values, less RAM is used while indexing, and searches on * unoptimized indices are faster, but indexing speed is slower. With larger * values, more RAM is used during indexing, and while searches on unoptimized * indices are slower, indexing is faster. Thus larger values (> 10) are best * for batch index creation, and smaller values (< 10) for indices that are * interactively maintained. * * <p>This must never be less than 2. The default value is 10.*/ public int mergeFactor = DEFAULT_MERGE_FACTOR; Does the IndexWriter.mergeFactor remain the same effect on the RAM use? __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
