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https://issues.apache.org/jira/browse/LUCENE-5028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13671648#comment-13671648
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Robert Muir commented on LUCENE-5028:
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I think instead of having this boolean in PositiveIntOutputs, if someone wants
a non-sharing outputs impl, it should just be a different outputs
implementation?
if anything is using this / anyone is upset by this, we could add one to the
sandbox.
> doShare is pointless in PositiveIntOutputs
> ------------------------------------------
>
> Key: LUCENE-5028
> URL: https://issues.apache.org/jira/browse/LUCENE-5028
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/FSTs
> Reporter: Han Jiang
> Assignee: Han Jiang
> Priority: Minor
> Fix For: 5.0
>
>
> We recently use this in oal.core.fst.PositiveIntOutputs to indicate whether
> to share outputs. The comment mentioned 'with doShare=false, in some case
> this may result in a smaller FST'. However, this is not intuitive, as for
> long type, we always have the smallest output reduced to NO_OUTPUT, thus the
> smallest one is 'moved' towards root, and no extra output is created.
> However, if there are many many small outputs around root arcs, when we share
> outputs, a large output might be pushed into the root arcs. When root arcs
> are packed as fixed-array, yes the size of FST is increased. But, I suppose
> this should invoke other intuitive heuristics, instead of the confusing
> 'doShare'?
> Besides, this only exist in PositiveIntOutputs.
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