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https://issues.apache.org/jira/browse/CASSANDRA-1891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976350#action_12976350
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Jonathan Ellis commented on CASSANDRA-1891:
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oops, s/ConcurrentLinkedHashMap/ConcurrentSkipListMap/. will fix on commit.
> large supercolumn deserialization invokes CSLM worst case scenario
> ------------------------------------------------------------------
>
> Key: CASSANDRA-1891
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1891
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Cliff Moon
> Priority: Minor
> Fix For: 0.7.1
>
> Attachments: 1891-v2.txt, supercolumn.patch
>
>
> SuperColumn deserialization hits a worst case insert scenario for CSLM:
> inserting pre-sorted entries one at a time. Inside of CSLM this requires
> scanning to the end of the list and doing a comparison at every step for
> every item inserted. This patch supplies a SortedMap interface to the
> supercolumn deserialization. CSLM will do a bulk insert from a SortedMap
> interface supplied in the constructor.
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