[jira] [Commented] (YARN-300) After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will infinite loop and not schedule any application.
[ https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541352#comment-13541352 ] shenhong commented on YARN-300: --- the method to solve is: when a node is reserved, break the loop. > After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will > infinite loop and not schedule any application. > -- > > Key: YARN-300 > URL: https://issues.apache.org/jira/browse/YARN-300 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager, scheduler >Reporter: shenhong > Labels: None > Fix For: 2.0.3-alpha > > Attachments: YARN-300.patch > > Original Estimate: 10h > Remaining Estimate: 10h > > After yarn-271, when yarn.scheduler.fair.max.assign=0, when a node was been > reserved, fairScheduler will infinite loop and not schedule any application. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (YARN-300) After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will infinite loop and not schedule any application.
[ https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541443#comment-13541443 ] Sandy Ryza commented on YARN-300: - When would it make sense to set max.assign to 0? > After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will > infinite loop and not schedule any application. > -- > > Key: YARN-300 > URL: https://issues.apache.org/jira/browse/YARN-300 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager, scheduler >Reporter: shenhong > Labels: None > Fix For: 2.0.3-alpha > > Attachments: YARN-300.patch > > Original Estimate: 10h > Remaining Estimate: 10h > > After yarn-271, when yarn.scheduler.fair.max.assign=0, when a node was been > reserved, fairScheduler will infinite loop and not schedule any application. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (YARN-300) After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will infinite loop and not schedule any application.
[ https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541588#comment-13541588 ] caolong commented on YARN-300: -- That's perfectly correct!! default maxAssign=-1 and assignMultiple=true so fairScheduler will infinite loop. > After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will > infinite loop and not schedule any application. > -- > > Key: YARN-300 > URL: https://issues.apache.org/jira/browse/YARN-300 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager, scheduler >Reporter: shenhong > Labels: None > Fix For: 2.0.3-alpha > > Attachments: YARN-300.patch > > Original Estimate: 10h > Remaining Estimate: 10h > > After yarn-271, when yarn.scheduler.fair.max.assign=0, when a node was been > reserved, fairScheduler will infinite loop and not schedule any application. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (YARN-300) After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will infinite loop and not schedule any application.
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https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541590#comment-13541590
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shenhong commented on YARN-300:
---
At FairScheduler#nodeUpdate() the code is:
if ((assignedContainers >= maxAssign) && (maxAssign > 0)) { break; }
so when the maxAssign <= 0, it will infinite loop, and default maxAssign=-1.
> After yarn-271, when yarn.scheduler.fair.max.assign=0, fairscheduler will
> infinite loop and not schedule any application.
> --
>
> Key: YARN-300
> URL: https://issues.apache.org/jira/browse/YARN-300
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager, scheduler
>Reporter: shenhong
> Labels: None
> Fix For: 2.0.3-alpha
>
> Attachments: YARN-300.patch
>
> Original Estimate: 10h
> Remaining Estimate: 10h
>
> After yarn-271, when yarn.scheduler.fair.max.assign=0, when a node was been
> reserved, fairScheduler will infinite loop and not schedule any application.
--
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[jira] [Commented] (YARN-300) After yarn-271, when yarn.scheduler.fair.max.assign<=0, fairscheduler will infinite loop and not schedule any application.
[ https://issues.apache.org/jira/browse/YARN-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541916#comment-13541916 ] Sandy Ryza commented on YARN-300: - Ah, good catch. This was in an earlier draft of YARN-271, but I somehow left it out. > After yarn-271, when yarn.scheduler.fair.max.assign<=0, fairscheduler will > infinite loop and not schedule any application. > --- > > Key: YARN-300 > URL: https://issues.apache.org/jira/browse/YARN-300 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager, scheduler >Reporter: shenhong > Labels: None > Fix For: 2.0.3-alpha > > Attachments: YARN-300.patch > > Original Estimate: 10h > Remaining Estimate: 10h > > After yarn-271, when yarn.scheduler.fair.max.assign<=0, when a node was been > reserved, fairScheduler will infinite loop and not schedule any application. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
