[HBASE-7206] Foreign Exception framework v2 (simplifies and replaces HBASE-6571)

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.95.0
• Component/s: snapshots
• Hadoop Flags: Reviewed
• Assignee: Jonathan Hsieh
• Reporter: Jonathan Hsieh
• Created: 22/Nov/12 02:59
• Updated: 23/Sep/13 18:30
• Resolved: 22/Dec/12 19:40

Description

This provides a way of sending exceptions from 'external' threads/processes (not the main executing thread) to others that poll cooperatively for external exceptions. Some examples of how this can be used include: having a separate timeout thread that injects an exception when a time limit has elapsed (TimeoutExceptionInjector, was OperationAttemptTimer), or having an exception from an separate process delivered to a local thread.

This simplified version is centered around the ExternalException class. Instead of using generics and ErrorListener interfaces, this more straight-forward implementation eliminates many of the builders/factories and generics.

Issue Links

• is depended upon by: HBASE-7208 Transition Offline Snapshots to ForeignExceptions
• is depended upon by: HBASE-7212 Globally Barriered Procedure mechanism