Robert Muir created LUCENE-4057:
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Summary: Add Codec.merge()
Key: LUCENE-4057
URL: https://issues.apache.org/jira/browse/LUCENE-4057
Project: Lucene - Java
Issue Type: Improvement
Affects Versions: 4.0
Reporter: Robert Muir
Fix For: 4.1
Currently individual codec components can override/optimize merging, e.g. the
stored fields impl
uses bulk copying when possible, and so on.
SegmentMerger contains the logic for merging the different codec components,
for example it does
mergeFieldInfos(), then mergeFields(), mergeTerms(), and so on. Each of these
methods interacts
with the codec apis to finish the merge.
I think it would be cleaner if SegmentMerger called a new method,
Codec.merge(), which contained
this logic instead. This way someone could customize this process. I think we
could probably even
push some of the impl-dependent stuff (like matchingSegmentReaders) into the
impl and out of SegmentMerger.
Setting this for 4.1, I think it would be a nice cleanup but I don't plan on
working on this immediately,
and I think we can do this in a backwards compatible way in a minor release.
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