gloCalHelp.com created CASSANDRA-15200:
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Summary: Can a new adding node store other keyspaces' data
and add permission of one more machine failure for a replicator 2's keyspace
in the new even number nodes' DC?
Key: CASSANDRA-15200
URL: https://issues.apache.org/jira/browse/CASSANDRA-15200
Project: Cassandra
Issue Type: Improvement
Reporter: gloCalHelp.com
Question on adding a new node, replicator and how many machine failes?
Can a new adding node store other keyspaces' data and add permission of
one more machine failure for a replicator 2's keyspace in the new even number
nodes' DC?
Cassandra's designing of adding a new node for only a keyspace is quite
good for a high load keyspace and token allocation. But I have aquestions:
1st, if the high load keyspace has a replicator of only 2, and original
cluster has only 3 datanodes, if adding a new node to form a 4 datanodes for
this keyspace, then there will permit how many machine failes for this 2
replicator keyspace's 4 data nodes center?
2nd, on cassandra's official web, there is a line of : To use this
approach, the new node must be started with the JVM option
-Dcassandra.allocate_tokens_for_keyspace=<keyspace>, where <keyspace> is the
keyspace from which the algorithm can find the load information to optimize
token assignment for.
Does this mean that a new adding node can only store a keyspace's data?
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