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From "Jack Krupansky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6477) Materialized Views (was: Global Indexes)
Date Tue, 07 Jul 2015 15:33:08 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14616866#comment-14616866
] 

Jack Krupansky commented on CASSANDRA-6477:
-------------------------------------------

1. Are MV updates still eventually consistent (not guaranteed)?

2. Is there any way for the app to assure that the MV update have been completed to some desired
CL?

3. Will a repair to the base table assure that all MV are consistent?

4. Can a single MV be repaired to assure that it is consistent? (Especially since the data
for a MV on a node will be derived from data on other nodes due to differences in the partition
keys.)

Great to see such an exciting new feature take shape!


> Materialized Views (was: Global Indexes)
> ----------------------------------------
>
>                 Key: CASSANDRA-6477
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6477
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Core
>            Reporter: Jonathan Ellis
>            Assignee: Carl Yeksigian
>              Labels: cql
>             Fix For: 3.0 beta 1
>
>         Attachments: test-view-data.sh
>
>
> Local indexes are suitable for low-cardinality data, where spreading the index across
the cluster is a Good Thing.  However, for high-cardinality data, local indexes require querying
most nodes in the cluster even if only a handful of rows is returned.



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