hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Min Shen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-5543) ResourceManager SchedulingMonitor could potentially terminate the preemption checker thread
Date Tue, 30 Aug 2016 00:48:21 GMT

     [ https://issues.apache.org/jira/browse/YARN-5543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Min Shen updated YARN-5543:
---------------------------
    Attachment: YARN-5543.003.patch

> ResourceManager SchedulingMonitor could potentially terminate the preemption checker
thread
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-5543
>                 URL: https://issues.apache.org/jira/browse/YARN-5543
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler, resourcemanager
>    Affects Versions: 2.7.0, 2.6.1
>            Reporter: Min Shen
>            Assignee: Min Shen
>         Attachments: YARN-5543.001.patch, YARN-5543.002.patch, YARN-5543.003.patch
>
>
> In SchedulingMonitor.java, when the service starts, it starts a checker thread to perform
Capacity Scheduler's preemption. However, the implementation of this checker thread has the
following issue:
> {code}
> while (!stopped && !Thread.currentThread().isInterrupted()) {
>     ....
>     try {
>       Thread.sleep(monitorInterval)
>     } catch (InterruptedException e) {
>       ....
>       break;
>     }
> }
> {code}
> The above code snippet will terminate the checker thread whenever it is interrupted.

> We noticed in our cluster that this could lead to CapacityScheduler's preemption disabled
unexpectedly due to the checker thread getting terminated.
> We propose to use ScheduledExecutorService to improve the robustness of this part of
the code to ensure the liveness of CapacityScheduler's preemption functionality.



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

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org


Mime
View raw message