[HBASE-6728] [89-fb] prevent OOM possibility due to per connection responseQueue being unbounded

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.94.3
• Hadoop Flags: Reviewed

Release Note

This issue adds config parameter, ipc.server.response.queue.maxsize, to control the maximum size of response queue.
Default response queue max size is 1GB.

• Assignee: Michal Gregorczyk
• Reporter: Kannan Muthukkaruppan
• Created: 06/Sep/12 18:02
• Updated: 03/Dec/12 21:47
• Resolved: 24/Oct/12 04:12

Description

The per connection responseQueue is an unbounded queue. The request handler threads today try to send the response in line, but if things start to backup, the response is sent via a per connection responder thread. This intermediate queue, because it has no bounds, can be another source of OOMs.

[Have not looked at this issue in trunk. So it may or may not be applicable there.]

Issue Links

• is related to: HBASE-2506 Too easy to OOME a RS
• relates to: HBASE-7041 Port HBASE-6728 '[89-fb] prevent OOM possibility due to per connection responseQueue being unbounded' to trunk