Robert Muir created LUCENE-6183:
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Summary: Avoid re-compression on stored fields merge
Key: LUCENE-6183
URL: https://issues.apache.org/jira/browse/LUCENE-6183
Project: Lucene - Core
Issue Type: Improvement
Reporter: Robert Muir
Fix For: Trunk, 5.1
We removed this optimization before, it didnt really work right because it
required things to be "aligned".
But I think we can do it simpler and safer. This recompression is a big cpu hog
in merge, and limits our options compression-wise (especially ones like LZ4-HC
that are only slower at write-time).
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