[jira] [Updated] (AURORA-1431) Slave reservation is too restrictive

["Zameer Manji (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AURORA-1431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zameer Manji updated AURORA-1431:
---------------------------------
    Fix Version/s: 0.10.0

> Slave reservation is too restrictive
> ------------------------------------
>
>                 Key: AURORA-1431
>                 URL: https://issues.apache.org/jira/browse/AURORA-1431
>             Project: Aurora
>          Issue Type: Bug
>          Components: Scheduler
>            Reporter: Maxim Khutornenko
>            Assignee: Maxim Khutornenko
>            Priority: Blocker
>             Fix For: 0.10.0
>
>
> This is a regression introduced in https://reviews.apache.org/r/37001/. The updated TaskAssigner logic looks for an exclusive task->slave match any time a slave reservation is present. Any time scheduling fails and a slave reservation is created by the preemptor a task group gets effectively locked into the reserved slave. Given that reverse slave->task relationship is no longer enforced, a reserved slave could be taken by some other task thus slowing down scheduling progress.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)