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https://issues.apache.org/jira/browse/MESOS-5693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15363396#comment-15363396
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Adam B commented on MESOS-5693:
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Could be that the agent was not in contact with the master to be able to
forward the update, but that's not possible for a whole hour. More likely the
scheduler was disconnected for a long time, and since the scheduler never
acknowledged the previous status update (TASK_RUNNING?), the agent never sent
the next update in the queue. In order for Mesos to provide guaranteed
at-least-once delivery of status updates to the schedulers, the scheduler must
be connected to ACK each update.
> slave delay to forword status update
> ------------------------------------
>
> Key: MESOS-5693
> URL: https://issues.apache.org/jira/browse/MESOS-5693
> Project: Mesos
> Issue Type: Improvement
> Components: slave
> Affects Versions: 0.22.1
> Environment: debian7
> Reporter: zhangfuxing
>
> we observe that mesos slave delay to forward task status update to master,
> I0615 14:59:10.997902 3890 slave.cpp:2531] Handling status update
> TASK_KILLED (UUID: 17e9c12f-5241-4aca-81fa-67d6830990b0) for task
> xxx.64554b80 of framework 20150629-151659-3355508746-5060-6173-0001 from
> executor(1)@10.0.40.189:54304
> I0615 14:59:11.001126 3895 status_update_manager.cpp:317] Received status
> update TASK_KILLED (UUID: 17e9c12f-5241-4aca-81fa-67d6830990b0) for task
> xxx.64554b80 of framework 20150629-151659-3355508746-5060-6173-0001
> I0615 14:59:11.001174 3895 status_update_manager.hpp:346] Checkpointing
> UPDATE for status update TASK_KILLED (UUID:
> 17e9c12f-5241-4aca-81fa-67d6830990b0) for task xxx.64554b80 of framework
> 20150629-151659-3355508746-5060-6173-0001
> I0615 14:59:11.037376 3894 slave.cpp:2709] Sending acknowledgement for
> status update TASK_KILLED (UUID: 17e9c12f-5241-4aca-81fa-67d6830990b0) for
> task xxx.64554b80 of framework 20150629-151659-3355508746-5060-6173-0001 to
> executor(1)@10.0.40.189:54304
> I0615 15:54:21.352087 3888 slave.cpp:2776] Forwarding the update TASK_KILLED
> (UUID: 17e9c12f-5241-4aca-81fa-67d6830990b0) for task xxx.64554b80 of
> framework 20150629-151659-3355508746-5060-6173-0001 to master@10.0.1.200:5060
> for this example, the task xxx.64554b80 has been killed at 14:59 but the
> status didn't forward to master until 15:54
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