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From "Michael McCandless (JIRA)" <>
Subject [jira] [Created] (LUCENE-4304) Remove PayloadProcessProvider
Date Mon, 13 Aug 2012 18:04:38 GMT
Michael McCandless created LUCENE-4304:

             Summary: Remove PayloadProcessProvider
                 Key: LUCENE-4304
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Michael McCandless

Now that we have pluggable codecs (well, PostingsFormat), an app should use a custom PostingsFormat
if it really must change payloads while merging.

Alternatively, use a FilteredIndexReader to modify anything during addIndexes (eg the facets
use case, modifying payloads).

Since this capability can be handled by existing more-generic functions I don't see why we
need to keep PPP around in core.  PPP is also fragile because an app generally has no visibility
on when a merge commits so it can't know if the payloads it retrieves are pre or post PPP.

I think merging shouldn't change postings as a side-effect (by default, anyway, since a custom
PF can of course override merge and do whatever it wants).

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