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https://issues.apache.org/jira/browse/CASSANDRA-6477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14554284#comment-14554284
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Carl Yeksigian commented on CASSANDRA-6477:
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bq. Because of a race on index maintenance, or because we're load shedding?
It's a race - the base mutation shouldn't be applied if the view mutations (and
tombstones) aren't. It is supposed to block until the view mutation is applied
before applying the base mutation; a lock is being held by the mutating thread,
so we shouldn't be doing other mutations at the same time.
> 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
>
>
> 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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