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https://issues.apache.org/jira/browse/CASSANDRA-2893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176329#comment-13176329
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Hudson commented on CASSANDRA-2893:
-----------------------------------
Integrated in Cassandra #1270 (See
[https://builds.apache.org/job/Cassandra/1270/])
add row-level isolation via SnapTree
patch by slebresne; reviewed by jbellis for CASSANDRA-2893
jbellis :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1225001
Files :
* /cassandra/trunk/lib/licenses/snaptree-0.1-SNAPSHOT.txt
* /cassandra/trunk/lib/snaptree-0.1-SNAPSHOT.jar
* /cassandra/trunk/src/java/org/apache/cassandra/db/AbstractColumnContainer.java
*
/cassandra/trunk/src/java/org/apache/cassandra/db/AbstractThreadUnsafeSortedColumns.java
*
/cassandra/trunk/src/java/org/apache/cassandra/db/ArrayBackedSortedColumns.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/AtomicSortedColumns.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/CollationController.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ColumnFamily.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ColumnFamilySerializer.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ISortedColumns.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/Memtable.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/Row.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/RowMutation.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/SuperColumn.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ThreadSafeSortedColumns.java
*
/cassandra/trunk/src/java/org/apache/cassandra/db/TreeMapBackedSortedColumns.java
*
/cassandra/trunk/test/unit/org/apache/cassandra/db/ArrayBackedSortedColumnsTest.java
* /cassandra/trunk/test/unit/org/apache/cassandra/db/ColumnFamilyTest.java
> 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.
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