[jira] Updated: (LUCENE-1584) Callback for intercepting merging segments in IndexWriter

["Jason Rutherglen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-1584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Rutherglen updated LUCENE-1584:
-------------------------------------

    Attachment: LUCENE-1584.patch

Patch is combined with LUCENE-1516. 

IndexWriter has a setSegmentMergerCallback method that is called
in IW.mergeMiddle where the readers being merged and the newly
merged reader are passed to the SMC.mergedSegments method.

I think we need to expose the SegmentReader segment name somehow
either via IndexReader.getSegmentName or an interface on top of
SegmentReader?  

> Callback for intercepting merging segments in IndexWriter
> ---------------------------------------------------------
>
>                 Key: LUCENE-1584
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1584
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: 2.4.1
>            Reporter: Jason Rutherglen
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1584.patch
>
>   Original Estimate: 96h
>  Remaining Estimate: 96h
>
> For things like merging field caches or bitsets, it's useful to
> know which segments were merged to create a new segment.

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