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From "Bill Farner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AURORA-1242) Consider new task states to track package fetching and task launching
Date Fri, 03 Apr 2015 00:44:54 GMT

    [ https://issues.apache.org/jira/browse/AURORA-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14393831#comment-14393831
] 

Bill Farner commented on AURORA-1242:
-------------------------------------

I don't think {{FETCHING}} is an audacious assumption, as it's something the majority of applications
will need to do before executing.

> Consider new task states to track package fetching and task launching
> ---------------------------------------------------------------------
>
>                 Key: AURORA-1242
>                 URL: https://issues.apache.org/jira/browse/AURORA-1242
>             Project: Aurora
>          Issue Type: Story
>          Components: Executor, Scheduler
>            Reporter: Maxim Khutornenko
>
> There is currently little to no visibility into task launching activities. Once a task
reaches {{RUNNING}} it's considered entering an application realm where the only way to dissect
the warmup period is through examining thermos processes (if they exist). The warmup may take
arbitrary long time to complete exacerbating the visibility problem even further. 
> Another example is docker container pull (AURORA-1059) where a task stays in {{ASSIGNED}}
until a docker pull completes. This skews our SLA metrics and risks aborting the task due
to exceeding transient task timeout.
> We should consider adding more task states to track package/container fetch and launching/warmup
activities explicitly, e.g.:
> {{ASSIGNED}} -> {{FETCHING}} ->{{LAUNCHING|STARTING}} -> {{RUNNING}}
> The above would require modifying the schema to require explicit definition for package
fetching.



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