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Benedict Elliott Smith commented on CASSANDRA-17044:
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bq. HintsManager
This is a {{HintsService}, or perhaps a {{HintsStore}}
Additionally, we have {{CommitLog}}, {{SystemKeyspace}},
{{SystemDistributedKeyspace}}, {{Tracing}}, {{PaxosState}},
{{CassandraMetricsRegistry}}, {{MessagingService}}, {{ActiveRepairService}},
{{VirtualKeyspaceRegistry}}, {{FullQueryLogger}}, {{DiagnosticEventService}},
{{PendingRangeCalculatorService}}, {{CacheService}}, and no doubt many more.
There are many {{XManager}} objects as well, but as far as I can tell these are
all countable nouns as I previously posited. {{Schema}} is not a countable
noun, and there is no specific set of {{Schema}} object to be managed, so
consistency is not a valid justification for this refactor in my view. Brevity
remains important.
> Refactor schema management to allow for schema source pluggability
> ------------------------------------------------------------------
>
> Key: CASSANDRA-17044
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17044
> Project: Cassandra
> Issue Type: Improvement
> Components: Cluster/Schema
> Reporter: Jacek Lewandowski
> Assignee: Jacek Lewandowski
> Priority: Normal
>
> The idea is decompose `Schema` into separate entities responsible for
> different things. In particular extract what is related to schema storage and
> synchronization into a separate class so that it is possible to create an
> extension point there and store schema in a different way than
> `system_schema` keyspace, for example in etcd.
> This would also simplify the logic and reduce the number of special cases,
> make all the things more testable and the logic of internal classes
> encapsulated.
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