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https://issues.apache.org/jira/browse/COUCHDB-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Joseph Davis resolved COUCHDB-3298.
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Resolution: Fixed
Merged.
> Improve couch_btree:chunkify logic
> ----------------------------------
>
> Key: COUCHDB-3298
> URL: https://issues.apache.org/jira/browse/COUCHDB-3298
> Project: CouchDB
> Issue Type: Improvement
> Components: Database Core
> Reporter: Paul Joseph Davis
>
> The current chunkify has problems when reduce functions create large values
> in that it will produce chunks (ie, kp nodes) that contain a single key. In
> some pathological cases this can create long chains of nodes that never
> branch.
> The old chunkify would also try and create nodes with an even number of bytes
> in each chunk. Given that we don't re-use chunks it makes more sense to try
> and pack our chunks as close to the threshold as possible so that we're
> creating fewer branches in our tree.
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