[MESOS-2787] mesos-ps fails with "KeyError: 'mem_rss_bytes'"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.21.1, 0.22.0, 0.22.1
• Fix Version/s: 0.23.0
• Component/s: agent, cli, python api, statistics
• Labels: easyfix patch

Environment

ubuntu 14.04, mesos 0.21.1

• Flags: Patch
• Assignee: weitao zhou
• Reporter: weitao zhou
• Shepherd: Benjamin Mahler
• Created: 01/Jun/15 07:18
• Updated: 09/Jun/15 01:53
• Resolved: 09/Jun/15 01:53

Description

When I run the command mesos ps --master=$MESOS-MASTER:5050, the following exception raised:

exception.sh

File "/usr/bin/mesos-ps", line 232, in <module>
    main()
  File "/usr/bin/mesos-ps", line 217, in main
    sys.stdout.write(columns[4].truncate(mem(task, statistics)))
  File "/usr/bin/mesos-ps", line 93, in mem
    mem_rss_bytes = entry['statistics']['mem_rss_bytes']
KeyError: 'mem_rss_bytes'

I tracked it and found that some mesos slave nodes can't return the statistics yet now. In my special case, the disk volumn of some my mesos slaves is 100% full.