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From "Charles Allen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-8158) Mesos Agent in docker neglects to retry discovering Task docker containers
Date Wed, 01 Nov 2017 21:13:01 GMT
Charles Allen created MESOS-8158:
------------------------------------

             Summary: Mesos Agent in docker neglects to retry discovering Task docker containers
                 Key: MESOS-8158
                 URL: https://issues.apache.org/jira/browse/MESOS-8158
             Project: Mesos
          Issue Type: Bug
          Components: agent, containerization, docker, executor
    Affects Versions: 1.4.0
         Environment: Windows 10 with Docker version 17.09.0-ce, build afdb6d4
            Reporter: Charles Allen
            Priority: Normal


I have attempted to launch Mesos agents inside of a docker container in such a way where the
agent docker can be replaced and recovered. Unfortunately I hit a major snag in the way the
mesos docker launching works.

To test simple functionality a marathon app is setup that simply has the following command:
{{date && python -m SimpleHTTPServer $PORT0}} 

That way the HTTP port can be accessed to assure things are being assigned correctly, and
the date is printed out in the log.

When I attempt to start this marathon app, the mesos agent (inside a docker container) properly
launches an executor which properly creates a second task that launches the python code. Here's
the output from the executor logs (this looks correct):

{code}
I1101 20:34:03.420210 68270 exec.cpp:162] Version: 1.4.0
I1101 20:34:03.427455 68281 exec.cpp:237] Executor registered on agent d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0
I1101 20:34:03.428414 68283 executor.cpp:120] Registered docker executor on 10.0.75.2
I1101 20:34:03.428680 68281 executor.cpp:160] Starting task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
I1101 20:34:03.428941 68281 docker.cpp:1080] Running docker -H unix:///var/run/docker.sock
run --cpu-shares 1024 --memory 134217728 -e HOST=10.0.75.2 -e MARATHON_APP_DOCKER_IMAGE=python:2
-e MARATHON_APP_ID=/testapp -e MARATHON_APP_LABELS= -e MARATHON_APP_RESOURCE_CPUS
=1.0 -e MARATHON_APP_RESOURCE_DISK=0.0 -e MARATHON_APP_RESOURCE_GPUS=0 -e MARATHON_APP_RESOURCE_MEM=128.0
-e MARATHON_APP_VERSION=2017-11-01T20:33:44.869Z -e MESOS_CONTAINER_NAME=mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
-e MESOS_SANDBOX=/mnt/mesos/sandbox -e MESOS_TA
SK_ID=testapp.fe35282f-bf43-11e7-a24b-0242ac110002 -e PORT=31464 -e PORT0=31464 -e PORTS=31464
-e PORT_10000=31464 -e PORT_HTTP=31464 -v /var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp
.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75:/mnt/mesos/sandbox
--net host --entrypoint /bin/sh --name mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75 --label=MESOS_TASK_ID=testapp.fe35282f-bf43-11e7-a24b-0242ac110002
python:2 -c date && p
ython -m SimpleHTTPServer $PORT0
I1101 20:34:03.430402 68281 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
I1101 20:34:03.520303 68286 docker.cpp:1290] Retrying inspect with non-zero status code. cmd:
'docker -H unix:///var/run/docker.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75',
interval: 500ms
I1101 20:34:04.021216 68288 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
I1101 20:34:04.124490 68281 docker.cpp:1290] Retrying inspect with non-zero status code. cmd:
'docker -H unix:///var/run/docker.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75',
interval: 500ms
I1101 20:34:04.624964 68288 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
I1101 20:34:04.934087 68286 docker.cpp:1345] Retrying inspect since container not yet started.
cmd: 'docker -H unix:///var/run/docker.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75',
interval: 500ms
I1101 20:34:05.435145 68288 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
Wed Nov  1 20:34:06 UTC 2017
{code}


But, somehow there is a TASK_FAILED message sent to marathon.

Upon further investigation, the following snippet can be found in the agent logs (running
in a docker container)

{code}
I1101 20:34:00.949129     9 slave.cpp:1736] Got assigned task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:00.950150     9 gc.cpp:93] Unscheduling '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001'
from gc
I1101 20:34:00.950225     9 gc.cpp:93] Unscheduling '/var/run/mesos/meta/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001'
from gc
I1101 20:34:00.950472    12 slave.cpp:2003] Authorizing task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:00.951210    12 slave.cpp:2171] Launching task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:00.952265    12 paths.cpp:578] Trying to chown '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec7
5' to user 'root'
I1101 20:34:00.952733    12 slave.cpp:7256] Launching executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 with resources [{"allocation_info":{"role":"*"},"name":"cpus","scalar":{"value":0.1},"type":"SCALAR"},{"a
llocation_info":{"role":"*"},"name":"mem","scalar":{"value":32.0},"type":"SCALAR"}] in work
directory '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac1100
02/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75'
I1101 20:34:00.953045    12 slave.cpp:2858] Launching container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:00.955057     6 docker.cpp:1136] Starting container '84f9ae30-9d4c-484a-860c-ca7845b7ec75'
for task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' (and executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002')
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45
-0001
I1101 20:34:00.955263    12 slave.cpp:2400] Queued task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:00.955965     6 docker.cpp:1531] Running docker -H unix:///var/run/docker.sock
inspect python:2
I1101 20:34:01.037293     8 docker.cpp:454] Docker pull python:2 completed
I1101 20:34:01.038180     8 docker.cpp:1080] Running docker -H unix:///var/run/docker.sock
run --cpu-shares 1126 --memory 167772160 -e LIBPROCESS_IP=10.0.75.2 -e LIBPROCESS_PORT=0 -e
MESOS_AGENT_ENDPOINT=10.0.75.2:5051 -e MESOS_CHECKPOINT=1 -e MESOS_CONTAINER_NAME=mesos
-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor -e MESOS_DIRECTORY=/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca784
5b7ec75 -e MESOS_EXECUTOR_ID=testapp.fe35282f-bf43-11e7-a24b-0242ac110002 -e MESOS_EXECUTOR_SHUTDOWN_GRACE_PERIOD=5secs
-e MESOS_FRAMEWORK_ID=a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 -e MESOS_HTTP_COMMAND_EXECUTOR=0
-e MESOS_NATIVE_JAVA_LIBRARY=/usr/lib/libmesos-1.4.0.
so -e MESOS_NATIVE_LIBRARY=/usr/lib/libmesos-1.4.0.so -e MESOS_RECOVERY_TIMEOUT=15mins -e
MESOS_SANDBOX=/mnt/mesos/sandbox -e MESOS_SLAVE_ID=d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0
-e MESOS_SLAVE_PID=slave(1)@10.0.75.2:5051 -e MESOS_SUBSCRIPTION_BACKOFF_MAX=2secs -v /va
r/run/docker.sock:/var/run/docker.sock:ro -v /var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75:/var/run/meso
s/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75:rw
-v /var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/fra
meworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75:/mnt/mesos/sandbox
--net host --name mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor --pid=host --cap-add=SYS_ADMIN
--c
ap-add=SYS_PTRACE mesos-docker /usr/libexec/mesos/mesos-docker-executor --cgroups_enable_cfs=false
--container=mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75 --docker=docker --docker_socket=/var/run/docker.sock
--help=false --initialize_driver_logging=true --launcher_dir=/u
sr/libexec/mesos --logbufsecs=0 --logging_level=INFO --mapped_directory=/mnt/mesos/sandbox
--quiet=false --sandbox_directory=/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf4
3-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75 --stop_timeout=0ns
I1101 20:34:01.040096     8 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor
I1101 20:34:01.138551     5 docker.cpp:1290] Retrying inspect with non-zero status code. cmd:
'docker -H unix:///var/run/docker.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor',
interval: 1secs
I1101 20:34:02.138964    13 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor
I1101 20:34:03.423805     5 slave.cpp:3935] Got registration for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 from executor(1)@10.0.75.2:35675
I1101 20:34:03.424316     5 docker.cpp:1616] Ignoring updating container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
because resources passed to update are identical to existing resources
I1101 20:34:03.424396     5 slave.cpp:2605] Sending queued task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
to executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
at executor(1)@10.0.75.2:35675
I1101 20:34:04.052783    11 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
E1101 20:34:04.156435    12 slave.cpp:5292] Container '84f9ae30-9d4c-484a-860c-ca7845b7ec75'
for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
failed to start: Failed to run 'docker -H unix:///var/run/dock
er.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75': exited with status 1; stderr='Error:
No such object: mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
'
I1101 20:34:04.156497    12 docker.cpp:2078] Container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
launch failed
I1101 20:34:04.156622     7 slave.cpp:5405] Executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 has terminated with unknown status
I1101 20:34:04.156958     7 slave.cpp:4399] Handling status update TASK_FAILED (UUID: 32c43a03-cede-49f8-9676-fd9411382c58)
for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002 of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
from @0.0.0.0:0
E1101 20:34:04.157133     7 slave.cpp:4721] Failed to update resources for container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
of executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' running task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
on status update for terminal t
ask, destroying container: Container not found
W1101 20:34:04.157173    11 composing.cpp:582] Attempted to destroy unknown container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
I1101 20:34:04.159068    12 status_update_manager.cpp:323] Received status update TASK_FAILED
(UUID: 32c43a03-cede-49f8-9676-fd9411382c58) for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:04.159276    12 status_update_manager.cpp:834] Checkpointing UPDATE for status
update TASK_FAILED (UUID: 32c43a03-cede-49f8-9676-fd9411382c58) for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:04.159399    12 slave.cpp:4880] Forwarding the update TASK_FAILED (UUID: 32c43a03-cede-49f8-9676-fd9411382c58)
for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002 of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
to master@10.0.75.2:5050
I1101 20:34:04.294680     8 status_update_manager.cpp:395] Received status update acknowledgement
(UUID: 32c43a03-cede-49f8-9676-fd9411382c58) for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:04.294747     8 status_update_manager.cpp:834] Checkpointing ACK for status update
TASK_FAILED (UUID: 32c43a03-cede-49f8-9676-fd9411382c58) for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:04.294945     8 slave.cpp:5516] Cleaning up executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 at executor(1)@10.0.75.2:35675
I1101 20:34:04.295308     8 slave.cpp:5612] Cleaning up framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:04.295418     8 gc.cpp:59] Scheduling '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75'
for gc
 6.99999658438519days in the future
I1101 20:34:04.295459     8 gc.cpp:59] Scheduling '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for gc 6.99999658329778days in the future
I1101 20:34:04.295481     8 gc.cpp:59] Scheduling '/var/run/mesos/meta/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002/runs/84f9ae30-9d4c-484a-860c-ca7845b7ec75'
f
or gc 6.99999658267259days in the future
I1101 20:34:04.295516     8 gc.cpp:59] Scheduling '/var/run/mesos/meta/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001/executors/testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
for gc 6.99999658223407days in the future
I1101 20:34:04.295537     8 gc.cpp:59] Scheduling '/var/run/mesos/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001'
for gc 6.99999658143407days in the future
I1101 20:34:04.295558     8 gc.cpp:59] Scheduling '/var/run/mesos/meta/slaves/d9bb6e96-ee26-43c2-977e-0c404fdd4e81-S0/frameworks/a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001'
for gc 6.9999965810637days in the future
I1101 20:34:04.295581     8 status_update_manager.cpp:285] Closing status update streams for
framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
I1101 20:34:06.748510     5 slave.cpp:4399] Handling status update TASK_RUNNING (UUID: 001f20d1-fe18-4cb0-9b39-cb9cd3cb9741)
for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002 of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
from executor(1)@10.0.75.2:35675
W1101 20:34:06.748546     5 slave.cpp:4455] Ignoring status update TASK_RUNNING (UUID: 001f20d1-fe18-4cb0-9b39-cb9cd3cb9741)
for task testapp.fe35282f-bf43-11e7-a24b-0242ac110002 of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
for unknown framework a5eb6da1-f8ac-
4642-8d66-cdd2e5b14d45-0001
I1101 20:34:45.960857     9 slave.cpp:5828] Framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
seems to have exited. Ignoring registration timeout for executor 'testapp.f53fc2ce-bf43-11e7-a24b-0242ac110002'
I1101 20:34:52.039710    12 slave.cpp:5920] Current disk usage 0.50%. Max allowed age: 6.265284309533982days
I1101 20:35:00.955883    12 slave.cpp:5828] Framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
seems to have exited. Ignoring registration timeout for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
I1101 20:35:52.040870    11 slave.cpp:5920] Current disk usage 0.50%. Max allowed age: 6.265284309533982days
I1101 20:36:52.041280     5 slave.cpp:5920] Current disk usage 0.50%. Max allowed age: 6.265284309533982days
I1101 20:37:52.042034    11 slave.cpp:5920] Current disk usage 0.50%. Max allowed age: 6.265284309533982days
{code}


Of particular note is the following line:

{code}
I1101 20:34:01.138551     5 docker.cpp:1290] Retrying inspect with non-zero status code. cmd:
'docker -H unix:///var/run/docker.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor',
interval: 1secs
I1101 20:34:02.138964    13 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75.executor
I1101 20:34:03.423805     5 slave.cpp:3935] Got registration for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001 from executor(1)@10.0.75.2:35675
I1101 20:34:03.424316     5 docker.cpp:1616] Ignoring updating container 84f9ae30-9d4c-484a-860c-ca7845b7ec75
because resources passed to update are identical to existing resources
I1101 20:34:03.424396     5 slave.cpp:2605] Sending queued task 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002'
to executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
at executor(1)@10.0.75.2:35675
I1101 20:34:04.052783    11 docker.cpp:1243] Running docker -H unix:///var/run/docker.sock
inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
E1101 20:34:04.156435    12 slave.cpp:5292] Container '84f9ae30-9d4c-484a-860c-ca7845b7ec75'
for executor 'testapp.fe35282f-bf43-11e7-a24b-0242ac110002' of framework a5eb6da1-f8ac-4642-8d66-cdd2e5b14d45-0001
failed to start: Failed to run 'docker -H unix:///var/run/dock
er.sock inspect mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75': exited with status 1; stderr='Error:
No such object: mesos-84f9ae30-9d4c-484a-860c-ca7845b7ec75
'
{code}

For some reason it seems like the AGENT is trying to connect to the TASK docker container
in addition to the executor container, and is failing to find it and instantly dying instead
of obeying a retry mechanism. I do not have an environment setup to trace the code path of
this error state, but the expected behavior is either that the Agent leaves it to the executor
to track the task, or that the agent respects retries. Neither of which seem to be happening
here.



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