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From "Sam Tunnicliffe (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CASSANDRA-10215) Reduce redundant secondary index selection lookups
Date Fri, 28 Aug 2015 09:20:46 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sam Tunnicliffe reassigned CASSANDRA-10215:
-------------------------------------------

    Assignee: Sam Tunnicliffe

> Reduce redundant secondary index selection lookups
> --------------------------------------------------
>
>                 Key: CASSANDRA-10215
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10215
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>             Fix For: 3.0.0 rc1
>
>
> Once an index has been identified as being the one that should be used for a given query,
it should be included as part of the {{ReadCommand}} so that it can be retrieved when needed
during execution. Currently we don't do this, meaning that the index selection process implemented
in {{SIM::getBestIndexFor}} is run multiple times on both the coordinator and each replica
when performing a range command.
> This is also a pre-requisite of CASSANDRA-10214



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