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Posted to commits@cassandra.apache.org by "Cathy Daw (Updated) (JIRA)" <ji...@apache.org> on 2012/01/20 03:39:40 UTC
[jira] [Updated] (CASSANDRA-2893) Add row-level isolation
[ https://issues.apache.org/jira/browse/CASSANDRA-2893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cathy Daw updated CASSANDRA-2893:
---------------------------------
Attachment: row_isolation_test.py
> 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, row_isolation_test.py, 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.
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