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From "Ivaylo Zlatev" <>
Subject increasing the mergeFactor causes FileNotFoundException (too many open files)
Date Tue, 12 Feb 2002 20:37:06 GMT

Increasing the MergeFactor on an IndexWriter can speed the indexing
process tremendously.
However, you can quickly run out of file descriptors and the indexing
application will thorw many open files)

I know prefectly how to increase the number of available file
descriptors on Unix (ulimit -n 1000).

But how to do this for the Windows 2000 Command-line process, where I
execute my java
indexing application?

I spent an hour digging the internet for such informaton, but can't find
I guess the answer is important to many other lucene users as well.


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