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https://issues.apache.org/jira/browse/LUCENE-1260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12586954#action_12586954
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Hoss Man commented on LUCENE-1260:
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bq. I haven't thought too much about it yet, but it seems to me that norm codec
has more to do with the physical store (Directory) than Similarity and should
perhaps be moved there instead?
As long as the norm remains a fixed size (1 byte) then it doesn't really matter
whether it's tied to Similarity's or the store itself -- it would be nice if
the Index could tell you which normDecoder to use, but it's not any more
unreasonable to expect the application to keep track of this (if it's not the
default encoding) since applications already have to keep track of things like
which Analyzer is "compatible" with querying this index.
If we want norms to be more flexible, so tat apps can pick not only the
encoding but also the size... then things get more interesting, but it's still
feasible to say "if you customize this, you have to make your reading apps and
your writing apps smart enough to know about your customization."
bq. I also want to move it to the instance scope so I can have multiple indices
with unique norm span/resolutions created from the same classloader.
I agree, it's a good goal.
> Norm codec strategy in Similarity
> ---------------------------------
>
> Key: LUCENE-1260
> URL: https://issues.apache.org/jira/browse/LUCENE-1260
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 2.3.1
> Reporter: Karl Wettin
> Attachments: LUCENE-1260.txt
>
>
> The static span and resolution of the 8 bit norms codec might not fit with
> all applications.
> My use case requires that 100f-250f is discretized in 60 bags instead of the
> default.. 10?
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