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From "ZhaoYang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-13293) MV read-before-write can be omitted for some operations
Date Sun, 23 Jul 2017 15:17:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-13293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ZhaoYang updated CASSANDRA-13293:
---------------------------------
    Component/s: Materialized Views
                 Local Write-Read Paths

> MV read-before-write can be omitted for some operations
> -------------------------------------------------------
>
>                 Key: CASSANDRA-13293
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13293
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local Write-Read Paths, Materialized Views
>            Reporter: Benjamin Roth
>
> A view that has the same fields in the primary key as its base table (i call it a congruent
key), does not require read-before-writes except:
> - Range deletes
> - Partition deletes
> If the view uses filters on non-pk columns either a rbw is required or a write that does
not match the filter has to be turned into a delete. In doubt I'd stay with the current behaviour
and to a rbw.



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