[jira] [Updated] (OAK-1895) ClassCastException can occur if the TraversalIndex is cheaper than an OrderedIndex (or a different AdvancedQueryIndex impl)

["Justin Edelson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-1895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Edelson updated OAK-1895:
--------------------------------

    Fix Version/s: 1.0.2

and on 1.0 branch in r1603013

> ClassCastException can occur if the TraversalIndex is cheaper than an OrderedIndex (or a different AdvancedQueryIndex impl)
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: OAK-1895
>                 URL: https://issues.apache.org/jira/browse/OAK-1895
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: query
>            Reporter: Justin Edelson
>            Assignee: Justin Edelson
>             Fix For: 1.1, 1.0.2
>
>
> Because the TraversalIndex is added last, the `bestPlan` variable will be non-null if an OrderedIndex was usable for the query. If the TraversalIndex ends up being cheaper, then the `bestIndex` variable is set to the TraveralIndex, but the `bestPlan` remains set to a non-null value.
> Later, in SelectorImpl, the fact that the plan is non-null causes the index to be cast to AdvancedQueryIndex which fails with a ClassCastException.



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