[HADOOP-13189] FairCallQueue makes callQueue larger than the configured capacity.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.6.5
• Component/s: ipc
• Target Version/s: 2.6.5
• Hadoop Flags: Reviewed
• Assignee: Vinitha Reddy Gankidi
• Reporter: Konstantin Shvachko
• Created: 20/May/16 21:54
• Updated: 11/Oct/16 23:18
• Resolved: 17/Jun/16 02:24

Description

FairCallQueue divides callQueue into multiple (4 by default) sub-queues, with each sub-queue corresponding to a different level of priority. The constructor for FairCallQueue takes the same parameter capacity as the default CallQueue implementation, and allocates all its sub-queues of size capacity. With 4 levels of priority (sub-queues) by default it results in the total callQueue size 4 times larger than it should be based on the configuration.
capacity should be divided by the number of sub-queues at some place.

Issue Links

• is broken by: HADOOP-10282 Create a FairCallQueue: a multi-level call queue which schedules incoming calls and multiplexes outgoing calls