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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-6477) Materialized Views (was: Global Indexes)
Date Mon, 20 Jul 2015 10:30:10 GMT


Sylvain Lebresne commented on CASSANDRA-6477:

bq. Also we should expose the base -> view replica pairs so operators know which ones need
to be rebuilt.

Talking of that pairing, do we properly take care of topology changes? That is, when the ownership
of some of the range is moving from a MV replica A to some other not B (that is bootstrapping
for instance), do we make sure to send the MV update to both node A and B (and we probably
need to make such check on each replay of the local batch log)?

> Materialized Views (was: Global Indexes)
> ----------------------------------------
>                 Key: CASSANDRA-6477
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Core
>            Reporter: Jonathan Ellis
>            Assignee: Carl Yeksigian
>              Labels: cql
>             Fix For: 3.0 beta 1
>         Attachments:, users.yaml
> 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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