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From Doug Cutting <>
Subject Re: Using MMapDirectory fails TestCompoundFile; MMapDirectory for huge indexes
Date Fri, 01 Oct 2004 20:16:59 GMT
Paul Elschot wrote:
> I'm working on a memory mapped directory that uses multiple buffers
> for large files.


There will be a small performance hit, as each call to readByte() will 
need to first check whether it's overflowed the current buffer, right?

> While trying some test runs I found that the current version fails a test:
>     [junit] Testsuite: org.apache.lucene.index.TestCompoundFile

Thanks for testing this!

> I'm testing the version with multiple buffers using a smaller maximum
> buffer size (1024 * 128), and it does this test in the same way.

You mean it fails too?

> I have not yet looked into TestCompoundFile. When it is a good test
> case for this, I'll submit the multibuffer version as an enhancement.

Thanks, that would be great.


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