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https://issues.apache.org/jira/browse/CASSANDRA-12681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15534124#comment-15534124
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Jeremiah Jordan commented on CASSANDRA-12681:
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[~jjirsa] since this is not a bug fix, and it breaks anything doing stuff like
mentioned in CASSANDRA-4795 I really think we should revert this from 3.0.10
and possibly only commit it to 4.0. This is a breaking "API" change/behavior.
> Reject empty options and invalid DC names in replication configuration while
> creating or altering a keyspace.
> -------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-12681
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12681
> Project: Cassandra
> Issue Type: Improvement
> Components: Distributed Metadata
> Reporter: Nachiket Patil
> Assignee: Nachiket Patil
> Priority: Minor
> Fix For: 3.0.10, 3.10
>
> Attachments: trunkpatch.diff, v3.0patch.diff
>
>
> Add some restrictions around create / alter keyspace with
> NetworkTopologyStrategy:
> 1. Do not accept empty replication configuration (no DC options after class).
> Cassandra checks that SimpleStrategy must have replication_factor option but
> does not check that at least one DC should be present in the options for
> NetworkTopologyStrategy.
> 2. Cassandra accepts any random string as DC name replication option for
> NetworkTopologyStrategy while creating or altering keyspaces. Add a
> restriction that the options specified is valid datacenter name. Using
> incorrect value or simple mistake in typing the DC name can cause outage in
> production environment.
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