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Posted to commits@cassandra.apache.org by "Benjamin Roth (JIRA)" <ji...@apache.org> on 2017/03/03 07:07:45 UTC

[jira] [Created] (CASSANDRA-13293) MV read-before-write can be omitted for some operations

Benjamin Roth created CASSANDRA-13293:
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             Summary: 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
            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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