Hi Ben,

Let me know if there is a new issue created for this, I would like to add
myself to watch it.
Thanks.



On Wed, Feb 10, 2016 at 9:54 AM, Sharma Podila <[email protected]> wrote:

> Hi Ben,
>
> That is accurate, with one additional line:
>
> -Agent running fine with 0.24.1
> -Transient ZK issues, slave flapping with zookeeper_init failure
> -ZK issue resolved
> -Most agents stop flapping and function correctly
> -Some agents continue flapping, but silent exit after printing the
> detector.cpp:481 log line.
> -The agents that continue to flap repaired with manual removal of contents
> in mesos-slave's working dir
>
>
>
> On Wed, Feb 10, 2016 at 9:43 AM, Benjamin Mahler <[email protected]>
> wrote:
>
>> Hey Sharma,
>>
>> I didn't quite follow the timeline of events here or how the agent logs
>> you posted fit into the timeline of events. Here's how I interpreted:
>>
>> -Agent running fine with 0.24.1
>> -Transient ZK issues, slave flapping with zookeeper_init failure
>> -ZK issue resolved
>> -Most agents stop flapping and function correctly
>> -Some agents continue flapping, but silent exit after printing the
>> detector.cpp:481 log line.
>>
>> Is this accurate? What is the exit code from the silent exit?
>>
>> On Tue, Feb 9, 2016 at 9:09 PM, Sharma Podila <[email protected]>
>> wrote:
>>
>>> Maybe related, but, maybe different since a new process seems to find
>>> the master leader and still aborts, never recovering with restarts until
>>> work dir data is removed.
>>> It is happening in 0.24.1.
>>>
>>>
>>>
>>>
>>> On Tue, Feb 9, 2016 at 11:53 AM, Vinod Kone <[email protected]>
>>> wrote:
>>>
>>>> MESOS-1326 was fixed in 0.19.0 (set the fix version now). But I guess
>>>> you are saying it is somehow related but not exactly the same issue?
>>>>
>>>> On Tue, Feb 9, 2016 at 11:46 AM, Raúl Gutiérrez Segalés <
>>>> [email protected]> wrote:
>>>>
>>>>> On 9 February 2016 at 11:04, Sharma Podila <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> We had a few mesos agents stuck in an unrecoverable state after a
>>>>>> transient ZK init error. Is this a known problem? I wasn't able to find 
>>>>>> an
>>>>>> existing jira item for this. We are on 0.24.1 at this time.
>>>>>>
>>>>>> Most agents were fine, except a handful. These handful of agents had
>>>>>> their mesos-slave process constantly restarting. The .INFO logfile had 
>>>>>> the
>>>>>> following contents below, before the process exited, with no error
>>>>>> messages. The restarts were happening constantly due to an existing 
>>>>>> service
>>>>>> keep alive strategy.
>>>>>>
>>>>>> To fix it, we manually stopped the service, removed the data in the
>>>>>> working dir, and then restarted it. The mesos-slave process was able to
>>>>>> restart then. The manual intervention needed to resolve it is 
>>>>>> problematic.
>>>>>>
>>>>>> Here's the contents of the various log files on the agent:
>>>>>>
>>>>>> The .INFO logfile for one of the restarts before mesos-slave process
>>>>>> exited with no other error messages:
>>>>>>
>>>>>> Log file created at: 2016/02/09 02:12:48
>>>>>> Running on machine: titusagent-main-i-7697a9c5
>>>>>> Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
>>>>>> I0209 02:12:48.502403 97255 logging.cpp:172] INFO level logging
>>>>>> started!
>>>>>> I0209 02:12:48.502938 97255 main.cpp:185] Build: 2015-09-30 16:12:07
>>>>>> by builds
>>>>>> I0209 02:12:48.502974 97255 main.cpp:187] Version: 0.24.1
>>>>>> I0209 02:12:48.503288 97255 containerizer.cpp:143] Using isolation:
>>>>>> posix/cpu,posix/mem,filesystem/posix
>>>>>> I0209 02:12:48.507961 97255 main.cpp:272] Starting Mesos slave
>>>>>> I0209 02:12:48.509827 97296 slave.cpp:190] Slave started on 1)@
>>>>>> 10.138.146.230:7101
>>>>>> I0209 02:12:48.510074 97296 slave.cpp:191] Flags at startup:
>>>>>> --appc_store_dir="/tmp/mesos/store/appc"
>>>>>> --attributes="region:us-east-1;<snip>" --authenticatee="<snip>"
>>>>>> --cgroups_cpu_enable_pids_and_tids_count="false"
>>>>>> --cgroups_enable_cfs="false" --cgroups_hierarchy="/sys/fs/cgroup"
>>>>>> --cgroups_limit_swap="false" --cgroups_root="mesos"
>>>>>> --container_disk_watch_interval="15secs" --containerizers="mesos" <snip>"
>>>>>> I0209 02:12:48.511706 97296 slave.cpp:354] Slave resources:
>>>>>> ports(*):[7150-7200]; mem(*):240135; cpus(*):32; disk(*):586104
>>>>>> I0209 02:12:48.512320 97296 slave.cpp:384] Slave hostname: <snip>
>>>>>> I0209 02:12:48.512368 97296 slave.cpp:389] Slave checkpoint: true
>>>>>> I0209 02:12:48.516139 97299 group.cpp:331] Group process (group(1)@
>>>>>> 10.138.146.230:7101) connected to ZooKeeper
>>>>>> I0209 02:12:48.516216 97299 group.cpp:805] Syncing group operations:
>>>>>> queue size (joins, cancels, datas) = (0, 0, 0)
>>>>>> I0209 02:12:48.516253 97299 group.cpp:403] Trying to create path
>>>>>> '/titus/main/mesos' in ZooKeeper
>>>>>> I0209 02:12:48.520268 97275 detector.cpp:156] Detected a new leader:
>>>>>> (id='209')
>>>>>> I0209 02:12:48.520803 97284 group.cpp:674] Trying to get
>>>>>> '/titus/main/mesos/json.info_0000000209' in ZooKeeper
>>>>>> I0209 02:12:48.520874 97278 state.cpp:54] Recovering state from
>>>>>> '/mnt/data/mesos/meta'
>>>>>> I0209 02:12:48.520961 97278 state.cpp:690] Failed to find resources
>>>>>> file '/mnt/data/mesos/meta/resources/resources.info'
>>>>>> I0209 02:12:48.523680 97283 detector.cpp:481] A new leading master
>>>>>> ([email protected]:7103) is detected
>>>>>>
>>>>>>
>>>>>> The .FATAL log file when the original transient ZK error occurred:
>>>>>>
>>>>>> Log file created at: 2016/02/05 17:21:37
>>>>>> Running on machine: titusagent-main-i-7697a9c5
>>>>>> Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
>>>>>> F0205 17:21:37.395644 53841 zookeeper.cpp:110] Failed to create
>>>>>> ZooKeeper, zookeeper_init: No such file or directory [2]
>>>>>>
>>>>>>
>>>>>> The .ERROR log file:
>>>>>>
>>>>>> Log file created at: 2016/02/05 17:21:37
>>>>>> Running on machine: titusagent-main-i-7697a9c5
>>>>>> Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
>>>>>> F0205 17:21:37.395644 53841 zookeeper.cpp:110] Failed to create
>>>>>> ZooKeeper, zookeeper_init: No such file or directory [2]
>>>>>>
>>>>>> The .WARNING file had the same content.
>>>>>>
>>>>>
>>>>> Maybe related: https://issues.apache.org/jira/browse/MESOS-1326
>>>>>
>>>>>
>>>>> -rgs
>>>>>
>>>>>
>>>>
>>>
>>
>

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