[HADOOP-15611] Log more details for FairCallQueue

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.2.0
• Target Version/s: 3.2.0
• Hadoop Flags: Reviewed
• Assignee: Ryan Wu
• Reporter: Ryan Wu
• Created: 17/Jul/18 06:03
• Updated: 18/Aug/18 01:59
• Resolved: 26/Jul/18 10:11

Description

In the usage of the FairCallQueue, we find there missing some Key log. Only a few logs are printed, it makes us hard to learn and debug this feature.

At least, following places can print more logs.

• DecayRpcScheduler#decayCurrentCounts
• WeightedRoundRobinMultiplexer#moveToNextQueue