On 3/22/07, Michael McCandless <[EMAIL PROTECTED]> wrote:
Merging is costly because you read all data in then write all data
out, so, you want to minimize for byte of data in the index in the
index how many times it will be "serviced" (read in, written out) as
part of a merge.

Avoiding the re-writing of stored fields might be nice:
http://www.nabble.com/Re%3A--jira--Commented%3A-%28LUCENE-565%29-Supporting-deleteDocuments-in-IndexWriter-%28Code-and-Performance-Results-Provided%29-p6177280.html

-Yonik

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