With ConcurrentMergeScheduler, adding all indexes at once to a single
IndexWriter will use multiple threads to do the merging, assuming you
have enough total segments that need merging (> 2 X mergeFactor will
use 2 threads; > 3 X mergeFactor will use 3, etc.; CMS defaults to max
3 merge t
:[EMAIL PROTECTED]
Sent: Tuesday, December 02, 2008 1:17 PM
To: java-user@lucene.apache.org
Subject: Merging indexes & multicore/multithreading
Let's say I have 8 indexes on a 4 core system and I want to merge them
(inside a single vm instance).
Is it better to do a single merge of all 8,
Let's say I have 8 indexes on a 4 core system and I want to merge them
(inside a single vm instance).
Is it better to do a single merge of all 8, or to in parallel threads
merge in pairs, until there is only a single index left? I guess the
question involves how multi-threaded merging is and if it
