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TransportListTaskAction: wait for tasks to finish asynchronously#90977

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arteam merged 20 commits intoelastic:mainfrom
arteam:transport-list-task-actions-async
Jan 26, 2023
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TransportListTaskAction: wait for tasks to finish asynchronously#90977
arteam merged 20 commits intoelastic:mainfrom
arteam:transport-list-task-actions-async

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@arteam arteam commented Oct 18, 2022 •
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Instead of synchronously blocking a thread in the management pool, add a listener on removed tasks and calls nodeOperation after all matched tasks have been removed. Also add a scheduled tasks to bail out after the specified wait timeout if the tasks haven't been finished.

Fixes #89564, #90988

@arteam arteam force-pushed the transport-list-task-actions-async branch 6 times, most recently from 2f1e118 to cff6350 Compare October 18, 2022 11:41
This was referenced Nov 14, 2022
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arteam commented Nov 14, 2022

@elasticmachine update branch

@kingherc kingherc added v8.7.0 and removed v8.6.0 labels Nov 16, 2022
@arteam arteam marked this pull request as ready for review January 4, 2023 14:36
@arteam arteam added the :Distributed/Task Management Issues for anything around the Tasks API - both persistent and node level. label Jan 4, 2023
@arteam arteam force-pushed the transport-list-task-actions-async branch from f82b7ea to 3e9edef Compare January 4, 2023 14:37
@elasticsearchmachine elasticsearchmachine added the Team:Distributed Meta label for distributed team. label Jan 4, 2023
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elasticsearchmachine commented Jan 4, 2023

Hi @arteam, I've created a changelog YAML for you.

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elasticsearchmachine commented Jan 4, 2023

Pinging @elastic/es-distributed (Team:Distributed)

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elasticsearchmachine commented Jan 4, 2023

Hi @arteam, I've updated the changelog YAML for you.

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elasticsearchmachine commented Jan 4, 2023

Hi @arteam, I've updated the changelog YAML for you.

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arteam commented Jan 13, 2023

@elasticmachine update branch

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Looks good to me so far! Just left a couple of comments before approving, to see if a couple of questions I have (due to my inexperience with this part of the code) are already done or need further attention.

.../src/internalClusterTest/java/org/elasticsearch/action/admin/cluster/node/tasks/TasksIT.java

@Override
public void subscribeForRemovedTasks(RemovedTaskListener removedTaskListener) {
waitForWaitingToStart.countDown();
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Do we need any additional tests for the new feature added in this PR or are the existing tests already indirectly testing the new feature?

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I believe we worked around this by always having 2 MANAGEMENT threads in #90193. I think we would get sufficient coverage by reverting that change, and we should do that here.

@arteam arteam requested a review from DaveCTurner January 19, 2023 21:11
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Looks good, I left just a couple more nits. I'd like someone else to review too tho.

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arteam commented Jan 23, 2023

@elasticmachine update branch

@fcofdez fcofdez self-requested a review January 23, 2023 16:16
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arteam commented Jan 23, 2023

@elasticmachine update branch

@DaveCTurner DaveCTurner dismissed their stale review January 23, 2023 20:38

comments all addressed

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LGTM, I left a couple of naming suggestions. I wonder if we could simplify this logic by changing how the subclasses interact with the task collection, etc. But I guess that route has been considered already.

@arteam arteam merged commit 6813012 into elastic:main Jan 26, 2023
@arteam arteam deleted the transport-list-task-actions-async branch January 26, 2023 10:20
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DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this pull request Feb 1, 2023
@DaveCTurner
Fix context leak in list tasks API
45ce74c 
In elastic#90977 we made the list tasks API fully async, but failed to notice
that if we waited for a task to complete then we would respond in the
thread context of the last-completing task. This commit fixes the
problem by restoring the context of the list-tasks task before
responding.

Closes elastic#93428
DaveCTurner added a commit that referenced this pull request Feb 2, 2023
@DaveCTurner
Fix context leak in list tasks API (#93431)
8d44c9a 
In #90977 we made the list tasks API fully async, but failed to notice
that if we waited for a task to complete then we would respond in the
thread context of the last-completing task. This commit fixes the
problem by restoring the context of the list-tasks task before
responding.

Closes #93428
mark-vieira pushed a commit to mark-vieira/elasticsearch that referenced this pull request Feb 2, 2023
@DaveCTurner @mark-vieira
Fix context leak in list tasks API (elastic#93431)
4494c66 
In elastic#90977 we made the list tasks API fully async, but failed to notice
that if we waited for a task to complete then we would respond in the
thread context of the last-completing task. This commit fixes the
problem by restoring the context of the list-tasks task before
responding.

Closes elastic#93428
arteam added a commit that referenced this pull request Feb 6, 2023
@arteam @DaveCTurner
TransportGetTaskAction: Wait for the task asynchronously (#93375)
7bd5613 
Wait for the requested task asynchronously in a similar fashion to TransportListTaskAction from #90977

See #90977

---------

Co-authored-by: David Turner <david.turner@elastic.co>
@pxsalehi pxsalehi mentioned this pull request Feb 13, 2023
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@arteam arteam mentioned this pull request Feb 13, 2023
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:Distributed/Task Management Issues for anything around the Tasks API - both persistent and node level. >enhancement Team:Distributed Meta label for distributed team. v8.7.0

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