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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3484) Replace memstore's ConcurrentSkipListMap with our own implementation
Date Thu, 27 Jan 2011 18:49:44 GMT
Replace memstore's ConcurrentSkipListMap with our own implementation
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                 Key: HBASE-3484
                 URL: https://issues.apache.org/jira/browse/HBASE-3484
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 0.92.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
             Fix For: 0.92.0


By copy-pasting ConcurrentSkipListMap into HBase we can make two improvements to it for our
use case in MemStore:
- add an iterator.replace() method which should allow us to do upsert much more cheaply
- implement a Set directly without having to do Map<KeyValue,KeyValue> to save one reference
per entry

It turns out CSLM is in public domain from its development as part of JSR 166, so we should
be OK with licenses.

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