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From "Tyler Hobbs (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-12605) Timestamp-order searching of sstables does not handle non-frozen UDTs, frozen collections correctly
Date Wed, 19 Oct 2016 22:35:58 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-12605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tyler Hobbs updated CASSANDRA-12605:
------------------------------------
    Component/s: Local Write-Read Paths

> 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
>          Components: Local Write-Read Paths
>            Reporter: Tyler Hobbs
>            Assignee: Tyler Hobbs
>             Fix For: 3.0.10, 3.10
>
>
> {{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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