[MESOS-818] Bump up the minimum number threads libprocess creates to accommodate new tests

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.16.0
• Component/s: libprocess
• Labels: twitter
• Assignee: Yan Xu
• Reporter: Yan Xu
• Created: 18/Nov/13 23:06
• Updated: 23/Nov/17 03:40
• Resolved: 19/Nov/13 23:57

Description

Currently the minimum number of threads libprocess creates is 4 which causes some newly written tests that have more libprocess processes needing to wait on latches than the number of threads libprocess has thus are starved.

See:
https://github.com/apache/mesos/blob/dd89ea359ec55fbc90b5718d9cdbf021f189c2fa/3rdparty/libprocess/src/process.cpp#L1367

Need to bump the minimum number to 8.

Issue Links

• is depended upon by: MESOS-496 Refactor the MasterDetector (with 'bool contend' option) into new MasterDetector and MasterContender.
• is related to: MESOS-8256 Libprocess can silently deadlock due to worker thread exhaustion.