[MESOS-7197] Requesting tiny amount of CPU crashes master.

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.1.0, 1.2.0
• Fix Version/s: 1.1.2, 1.2.1, 1.3.0
• Component/s: allocation

Environment

Ubuntu 14.04, using Mesosphere PPA to install Mesos

• Target Version/s: 1.1.2, 1.2.1, 1.3.0
• Sprint: Mesosphere Sprint 52, Mesosphere Sprint 53
• Story Points: 3
• Assignee: Neil Conway
• Reporter: Bruce Merry
• Shepherd: Joris Van Remoortere
• Created: 02/Mar/17 09:01
• Updated: 17/May/17 20:52
• Resolved: 23/Mar/17 22:51

Description

If a task is submitted with a tiny CPU request e.g. 0.0004, then when it completes the master crashes due to a CHECK failure:

F0302 10:48:26.654909 15391 sorter.cpp:291] Check failed: allocations[name].resources[slaveId].contains(resources) 

I can reproduce this with the following command:

mesos-execute --command='sleep 5' --master=$MASTER --name=crashtest --resources='cpus:0.0004;mem:128'

If I replace 0.0004 with 0.001 the issue no longer occurs.

Issue Links

• is duplicated by: MESOS-7382 Master dies when task resources are set to less than minimum
• is related to: MESOS-7382 Master dies when task resources are set to less than minimum
• is related to: MESOS-1807 Disallow executors with cpu only or memory only resources
• is superceded by: MESOS-4687 Implement reliable floating point for scalar resources