[jira] [Updated] (CASSANDRA-9041) Allow a PerRowSecondaryIndex to perform its index operation before the underlying data has been mutated

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-9041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-9041:
--------------------------------------
    Assignee: Sam Tunnicliffe

> Allow a PerRowSecondaryIndex to perform its index operation before the underlying data has been mutated
> -------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-9041
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9041
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Bryn Cooke
>            Assignee: Sam Tunnicliffe
>
> The current PerRowSecondaryIndex receives its index event after the call to BTree.update. This means that it is impossible to write an index that eagerly removes stale index entries.
> It would be great to have some sort of preIndex method that gets called with the key and column family.
> In addition a postIndex method that is guaranteed to get called regardless if the actual BTree operation succeeds or not would allow cleanup in the event of error. 



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