[
https://issues.apache.org/jira/browse/HBASE-3484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13410818#comment-13410818
]
Jean-Daniel Cryans edited comment on HBASE-3484 at 7/10/12 8:21 PM:
--------------------------------------------------------------------
Something that's not log( n ), so a straight line would be ideal :)
Edit: apparently this is thumbdown (n)
was (Author: jdcryans):
Something that's not log(n), so a straight line would be ideal :)
> Replace memstore's ConcurrentSkipListMap with our own implementation
> --------------------------------------------------------------------
>
> Key: HBASE-3484
> URL: https://issues.apache.org/jira/browse/HBASE-3484
> Project: HBase
> Issue Type: Improvement
> Components: performance
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Priority: Critical
> Attachments: hierarchical-map.txt, memstore_drag.png
>
>
> 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
