cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brandon Williams (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-2893) Add row-level isolation
Date Wed, 21 Dec 2011 20:57:31 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-2893:
----------------------------------------

    Attachment: latency-plain.svg

Here is a chart of write latencies against both in 'plain old stress' mode.
                
> Add row-level isolation
> -----------------------
>
>                 Key: CASSANDRA-2893
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2893
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: 0001-Move-deletion-infos-into-ISortedColumns-v2.patch, 0001-Move-deletion-infos-into-ISortedColumns.patch,
0002-Make-memtable-use-CF.addAll-v2.patch, 0002-Make-memtable-use-CF.addAll.patch, 0003-Add-AtomicSortedColumn-and-snapTree-v2.patch,
0003-Add-AtomicSortedColumn-and-snapTree.patch, latency-plain.svg, latency.svg, snaptree-0.1-SNAPSHOT.jar
>
>
> This could be done using an the atomic ConcurrentMap operations from the Memtable and
something like http://code.google.com/p/pcollections/ to replace the ConcurrentSkipListMap
in ThreadSafeSortedColumns.  The trick is that pcollections does not provide a SortedMap,
so we probably need to write our own.
> Googling [persistent sortedmap] I found http://code.google.com/p/actord/source/browse/trunk/actord/src/main/scala/ff/collection
(in scala) and http://clojure.org/data_structures#Data Structures-Maps.

--
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

        

Mime
View raw message