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https://issues.apache.org/jira/browse/CASSANDRA-12605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15509879#comment-15509879
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Benjamin Lerer commented on CASSANDRA-12605:
--------------------------------------------
I relaunched CI for the DTests as they did not run properly.
> Timestamp-order searching of sstables does not handle non-frozen UDTs, frozen
> collections correctly
> ---------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-12605
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12605
> Project: Cassandra
> Issue Type: Bug
> Reporter: Tyler Hobbs
> Assignee: Tyler Hobbs
>
> {{SinglePartitionReadCommand.queryNeitherCountersNorCollections()}} is used
> to determine whether we can search sstables in timestamp order. We cannot
> use this optimization when there are multicell values (such as unfrozen
> collections or UDTs). However, this method only checks
> {{column.type.isCollection() || column.type.isCounter()}}. Instead, it
> should check {{column.type.isMulticell() || column.type.isCounter()}}.
> This has two implications:
> * We are using timestamp-order searching when querying non-frozen UDTs, which
> can lead to incorrect/stale results being returned.
> * We are not taking advantage of this optimization when querying frozen
> collections.
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