[jira] Updated: (COUCHDB-92) Have compaction work on view indexes

["Chris Anderson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COUCHDB-92?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Anderson updated COUCHDB-92:
----------------------------------

    Fix Version/s:     (was: 0.9)
                   0.10

> Have compaction work on view indexes
> ------------------------------------
>
>                 Key: COUCHDB-92
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-92
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: JavaScript View Server
>    Affects Versions: 0.8
>            Reporter: Jan Lehnardt
>             Fix For: 0.10
>
>
> Right now, view indexes just grow and grow with each new index update. Since they are just indexes, and not the data itself, compaction is simply a matter of deleting the index files.
> Also, the current Btree implementation isn't completely self balanacing. It misses a balancing condition, partially for efficiency (it's an expensive balancing operation), and for expediency. It was easier to not implement it and gets the general case perormance boost.
> The thing about this is, the btree code can remain as is if the indexing compaction just recopies the map values (and back indexes) and recomputes the reduction values. That's a very simple design, however, if the btree is completely self balancing, then the btree can be copied on a node by node basis, instead of a value by value basis, and the reduction values need not be recomputed all. This will make the compaction significantly faster overall.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.