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Posted to issues@flink.apache.org by "Till Rohrmann (Jira)" <ji...@apache.org> on 2020/02/18 10:47:00 UTC

[jira] [Updated] (FLINK-16069) Creation of TaskDeploymentDescriptor can block main thread for long time

     [ https://issues.apache.org/jira/browse/FLINK-16069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann updated FLINK-16069:
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    Summary: Creation of TaskDeploymentDescriptor can block main thread for long time  (was: Create TaskDeploymentDescriptor in future.)

> Creation of TaskDeploymentDescriptor can block main thread for long time
> ------------------------------------------------------------------------
>
>                 Key: FLINK-16069
>                 URL: https://issues.apache.org/jira/browse/FLINK-16069
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>            Reporter: huweihua
>            Priority: Major
>
> The deploy of tasks will take long time when we submit a high parallelism job. And Execution#deploy run in mainThread, so it will block JobMaster process other akka messages, such as Heartbeat. The creation of TaskDeploymentDescriptor take most of time. We can put the creation in future.
> For example, A job [source(8000)->sink(8000)], the total 16000 tasks from SCHEDULED to DEPLOYING took more than 1mins. This caused the heartbeat of TaskManager timeout and job never success.



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