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From "Zameer Manji (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (AURORA-1823) `createJob` API uses single thread to move all tasks to PENDING
Date Tue, 22 Nov 2016 21:35:58 GMT

     [ https://issues.apache.org/jira/browse/AURORA-1823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zameer Manji reassigned AURORA-1823:
------------------------------------

    Assignee: Zameer Manji

> `createJob` API uses single thread to move all tasks to PENDING 
> ----------------------------------------------------------------
>
>                 Key: AURORA-1823
>                 URL: https://issues.apache.org/jira/browse/AURORA-1823
>             Project: Aurora
>          Issue Type: Bug
>            Reporter: Zameer Manji
>            Assignee: Zameer Manji
>            Priority: Minor
>
> If you create a single job with many tasks (lets say 10k+) the `createJob` API will take
a long time. This is because the `createJob` API only returns when all of the tasks have moved
to PENDING and it uses a single thread to do so. Here is a snippet of the logs:
> {noformat}
> ...
> I1116 17:11:53.964 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57114-8aff8e77-3bde-4a83-99eb-8c6e52f14a7a
state machine transition INIT -> PENDING
> I1116 17:11:53.965 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57114-8aff8e77-3bde-4a83-99eb-8c6e52f14a7a
> I1116 17:11:54.094 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57115-f5baa93f-78af-470d-bcdf-1d86c0b98c80
state machine transition INIT -> PENDING
> I1116 17:11:54.094 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57115-f5baa93f-78af-470d-bcdf-1d86c0b98c80
> I1116 17:11:54.223 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57116-0553d98c-f5de-4857-9a70-c5c748ddee03
state machine transition INIT -> PENDING
> I1116 17:11:54.224 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57116-0553d98c-f5de-4857-9a70-c5c748ddee03
> I1116 17:11:54.353 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57117-46e168f6-8753-4be0-873d-f18d1f562570
state machine transition INIT -> PENDING
> I1116 17:11:54.353 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57117-46e168f6-8753-4be0-873d-f18d1f562570
> I1116 17:11:54.482 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57118-ac94b4fb-f319-4ca2-b788-2ee093ef1c67
state machine transition INIT -> PENDING
> I1116 17:11:54.482 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57118-ac94b4fb-f319-4ca2-b788-2ee093ef1c67
> I1116 17:11:54.611 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57119-060ef7fc-7e17-4f8c-83dc-216550332153
state machine transition INIT -> PENDING
> I1116 17:11:54.612 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57119-060ef7fc-7e17-4f8c-83dc-216550332153
> I1116 17:11:54.741 [qtp1219612889-50, StateMachine$Builder:389] sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57120-c163c750-3658-44b7-b1ea-43f5d503f7c9
state machine transition INIT -> PENDING
> I1116 17:11:54.742 [qtp1219612889-50, TaskStateMachine:474] Adding work command SAVE_STATE
for sparker1-devel-echo-8017fae7-f592-49c7-bfef-fac912abecaa-57120-c163c750-3658-44b7-b1ea-43f5d503f7c9
> ...
> {noformat}
> Observe that a single jetty thread is doing this.
> We should leverage {{BatchWorker}} to have concurrent mutations here.



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