Andrew Purtell created HBASE-9351:
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Summary: Connection capability negotiation
Key: HBASE-9351
URL: https://issues.apache.org/jira/browse/HBASE-9351
Project: HBase
Issue Type: Improvement
Reporter: Andrew Purtell
Would be useful to support negotiation at connection setup time beyond SASL.
Consider:
Start with a default baseline profile. Both client and server sides can begin
communicating immediately (or after SASL completes if security is active), with
a baseline set of messages and codecs.
For more interesting use cases, support configuration messages that negotiate
connection configuration going forward after both sides ack the changes: codec,
configuration, compression. Any nack aborts the upgrade request and leaves both
sides still in the default profile.
Should be a pluggable implementation. For example, codec implementations should
be automatically discovered at runtime if shipped with the client or server,
and the set of available options should be communicated to the other side.
Features like codecs should all be versioned themselves. Negotiation should be
version aware, and decisionmaking on if a given pair of component versions are
compatible should be delegated to the component.
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