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https://issues.apache.org/jira/browse/CASSANDRA-2893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-2893:
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Description:
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.
was:This could be done using something an AtomicReference and something like
http://code.google.com/p/pcollections/ but with a SortedMap (for the
columnfamily.columns collection). So we probably need to write our own.
> Add row-level isolation
> -----------------------
>
> Key: CASSANDRA-2893
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2893
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jonathan Ellis
> Priority: Minor
>
> 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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