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https://issues.apache.org/jira/browse/AMBARI-25606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmytro Grinenko updated AMBARI-25606:
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Status: Patch Available (was: Open)
> Sometimes request aborting doesn't abort IN_PROGRESS task
> ---------------------------------------------------------
>
> Key: AMBARI-25606
> URL: https://issues.apache.org/jira/browse/AMBARI-25606
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.7.5
> Reporter: Dmytro Vitiuk
> Assignee: Dmytro Grinenko
> Priority: Major
> Fix For: 2.7.6
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> There is a raise condition in request aborting process.
> Imagine, we have a request with couple of stages/tasks and one task is in
> IN_PROGRESS state. Then let's try to abort the request.
> Crucial steps of request aborting are:
> # Get all not completed tasks for the request.
> # Get QUEUED and IN_PROGRESS tasks from #1 and send cancel commands to the
> agents (we've sent cancel command for our task).
> # Get tasks in HOLDING_STATES (HOLDING_FAILED etc.) from #1 and try to abort
> them.
> # Get all tasks form stages which are not in COMPLETED state for the request.
> # Get tasks from #4 which are in PENDING, QUEUED, IN_PROGRESS states and
> abort them.
> But if the server receive response from the agent for cancel command (sent in
> #2), then task will be transitioned from IN_PROGRESS to HOLDING_FAILED state.
> That's ok if it happen before step #2 (it will be aborted because has
> HOLDING_FAILED state) or after step #5 (it had IN_PROGRESS state and was
> aborted; update from the agent won't change state to HOLDING_FAILED, because
> we handle this case).
> But if we receive response from the agent between steps #3 and #5, then task
> will not be aborted and we will get a task with HOLDING_FAILED state after
> abort operation completion.
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