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https://issues.apache.org/jira/browse/CASSANDRA-19733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuki Morishita reassigned CASSANDRA-19733:
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Assignee: Yuki Morishita
> Add feature to filter streaming source when bootstrapping
> ---------------------------------------------------------
>
> Key: CASSANDRA-19733
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19733
> Project: Cassandra
> Issue Type: Improvement
> Components: Cluster/Membership
> Reporter: Yuki Morishita
> Assignee: Yuki Morishita
> Priority: Normal
>
> h2. Proposed improvement
> Right now, the stream sources for the bootstrap are chosen from the closest
> nodes (usually the same rack) of the bootstrapping node.
> Add the following system properties so that when bootstrap happens, the node
> can choose where to stream data from.
> * {{cassandra.bootstrap.include_dcs}}
> * {{cassandra.bootstrap.exclude_dcs}}
> * {{cassandra.bootstrap.include_sources}}
> {{cassandra.bootstrap.include_dcs and }}{{cassandra.bootstrap.exclude_dcs can
> take args like "dc1,dc2" to specify DCs or "dc1:rack1,dc1:rack2,..." to
> specify DC/Racks.}}
> {{cassandra.bootstrap.include_sources is used to specify ip address/port of
> the specific nodes to stream from.}}
> h2. Motivation
> Currently, when the node failure happens in the middle of the major cluster
> upgrade, general advice given to the user is to complete the upgrade of the
> cluster until all nodes are in the same version, and replace/remove the
> failed node. This is because the streaming breaks when there is unsupported
> SSTable version streamed from newer to the older.
> This approach can create availability issue when two nodes (the failed node
> from different rack and the node currently stopped for the upgrade) are down.
> With this improvement, the user can replace the failed node using, for
> example, specific rack in the same DC or another DC, to eliminate the
> availability issue described above.
> h2. Note
> The user also needs to set "-Dcassandra.skip_schema_check=true" when
> replacing the node during the major upgrade to complete the replacement.
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