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https://issues.apache.org/jira/browse/CASSANDRA-14405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546884#comment-16546884
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Ariel Weisberg commented on CASSANDRA-14405:
--------------------------------------------
Blake was out for a while so I took over the metadata refactor. [This
branch|https://github.com/aweisberg/cassandra/tree/14405-replicas-rebased] is
what we are using now and it's the base for CASSANDRA-14406, CASSANDRA-14407,
and CASSANDRA-14408 which we plan to merge to trunk together with the metadata
refactor once complete. I don't want to merge the metadata refactor alone since
it's a bit silly if you can't even read and write with transient replication.
The metadata refactor has been reviewed by @ifesdjeen and myself so far.
> Transient Replication: Metadata refactor
> ----------------------------------------
>
> Key: CASSANDRA-14405
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14405
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core, Distributed Metadata, Documentation and Website
> Reporter: Ariel Weisberg
> Assignee: Blake Eggleston
> Priority: Major
> Fix For: 4.0
>
>
> Add support to CQL and NTS for configuring keyspaces to have transient
> replicas.
> Add syntax allowing a keyspace using NTS to declare some replicas in each DC
> as transient.
> Implement metadata internal to the DB so that it's possible to identify what
> replicas are transient for a given token or range.
> Introduce Replica which is an InetAddressAndPort and a boolean indicating
> whether the replica is transient. ReplicatedRange which is a wrapper around a
> Range that indicates if the range is transient.
> Block altering of keyspaces to use transient replication if they already
> contain MVs or 2i.
> Block the creation of MV or 2i in keyspaces using transient replication.
> Block the creation/alteration of keyspaces using transient replication if the
> experimental flag is not set.
> Update web site, CQL spec, and any other documentation for the new syntax.
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