[HBASE-11497] Expose RpcScheduling implementations as LimitedPrivate interfaces

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.99.0, 0.98.4
• Fix Version/s: 0.99.0, 0.98.4
• Component/s: io, regionserver, Usability
• Hadoop Flags: Reviewed
• Assignee: Jesse Yates
• Reporter: Jesse Yates
• Created: 10/Jul/14 19:21
• Updated: 06/Apr/18 17:51
• Resolved: 14/Jul/14 21:24

Description

In PHOENIX-938 we are attempting to resolve cross-RS deadlocks in indexing by adding custom RPC handlers (so regular puts/reads don't interfere with index updates). However, we've run into a couple of snags where the interfaces change, making it a bit more difficult to support interoperability between minor versions as the underlying RPC handling changed (for the better, but still different .

This would just mark those interfaces Public, Evolving, so we still have some flexibility, but don't break existing usage.

Note, this kind of thing will come up for any client who is doing custom RPC handling - beyond the recently added flexibility - but wants to stay in line with the current HBase implementation (rather than building their own RPC handling mechanisms).