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https://issues.apache.org/jira/browse/CASSANDRA-14405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16563868#comment-16563868
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Ariel Weisberg commented on CASSANDRA-14405:
--------------------------------------------
For observers, we aren't making further changes to the metadata refactor branch
right now. It's not that it's not subject to additional review or fixes we just
aren't landing changes there. We want everyone (Blake, Alex, myself) to only
have a single thing to rebase onto.
The branch Alex pushed is now the base for my work on ring changes and it's the
in progress spot for read/write and incremental repair.
Incidentally my current working branch for ring changes is
[here|https://github.com/aweisberg/cassandra/tree/14409-4]. I add a -N and push
a new branch every time I rebase.
> 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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