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https://issues.apache.org/jira/browse/LUCENE-10057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17401576#comment-17401576
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Dawid Weiss commented on LUCENE-10057:
--------------------------------------
Uwe:
{code}
To fix the demo issue: In KNNVectorDict demo application should use
FSDirectory.open() instead of lowlevel code with FileChannel. Then open the
file as IndexInput and call randomAccessSlice() on it
(<https://lucene.apache.org/core/8_9_0/core/org/apache/lucene/store/IndexInput.html#randomAccessSlice-long-long->).
Then you can read the values using RandomAccessInput#getXY:
https://lucene.apache.org/core/8_9_0/core/org/apache/lucene/store/RandomAccessInput.html
(which uses MMap behind scenes, if it is an MMapDirectory or on unsupported
platform like 32 bit it will use the other directory implementations).
{code}
> Replace direct mmaped buffer with Lucene abstractions in KnnVectorDict
> ----------------------------------------------------------------------
>
> Key: LUCENE-10057
> URL: https://issues.apache.org/jira/browse/LUCENE-10057
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Dawid Weiss
> Priority: Major
>
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