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https://issues.apache.org/jira/browse/LUCENE-4858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607736#comment-13607736
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Shai Erera commented on LUCENE-4858:
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I am thinking for some time on segment-level metadata. Something like
SegmentInfo.attributes(). These attributes are not exposed on the API today,
and therefore they are not a good fit, but we should be able to expose
something like that, which by default is empty, but SortingAtomicReader can
set. A Map<String,String> basically. I wanted to use something similar in
facets to record per segment some of the FacetIndexingParams, so that the index
is more self-descriptive to code that reads it.
Perhaps we should do that (separate issue)? Maybe AtomicReader.getMetadata()
returns a Map?
> Ability to terminate queries on a per-segment basis
> ---------------------------------------------------
>
> Key: LUCENE-4858
> URL: https://issues.apache.org/jira/browse/LUCENE-4858
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: 4.3
>
>
> Spin-off of LUCENE-4752, see
> https://issues.apache.org/jira/browse/LUCENE-4752?focusedCommentId=13606565&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13606565
> and
> https://issues.apache.org/jira/browse/LUCENE-4752?focusedCommentId=13607282&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13607282
> When an index is sorted per-segment, queries that sort according to the index
> sort order could be early terminated.
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