[HBASE-5305] Improve cross-version compatibility & upgradeability

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.95.0
• Component/s: IPC/RPC, master, migration, regionserver
• Tags: 0.96notable
• Assignee: Unassigned
• Reporter: Devaraj Das
• Created: 31/Jan/12 07:36
• Updated: 15/Oct/13 04:46
• Resolved: 11/Jan/13 08:10

Description

Raising an umbrella jira to address the RPC/Data compatibility & HBase upgradeability issues recently raised in the dev@ mailing list (am referring to the thread where one such message is http://bit.ly/wxl9Dy). I'll add some high level sub-tasks to this issue. Please feel free to add more.

Issue Links

• incorporates: HBASE-6282 The introspection, etc. of objects in the RPC has to be handled for PB objects
• is part of: HBASE-2182 rpc/ipc refactor; x-version compatibility, nio, async, enveloping, sane timeouts, etc.
• is related to: HBASE-7215 Put, Delete, Increment, Result, all all HBase M/R classes still implement/use Writable
• is related to: HBASE-5443 Add PB-based calls to HRegionInterface
• relates to: HBASE-5443 Add PB-based calls to HRegionInterface
• requires: HBASE-5732 Remove the SecureRPCEngine and merge the security-related logic in the core engine
• requires: HBASE-6414 Remove the WritableRpcEngine & associated Invocation classes