hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7258) Add Node and Rack Hints to Opportunistic Scheduler
Date Wed, 04 Oct 2017 17:51:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16191701#comment-16191701

Arun Suresh commented on YARN-7258:

Thanks for the patch [~kartheek]
Some comments:
* It looks generally good. We might need to add some more tests - to differentiate between
when we have requests with numcontainers > 1 and those with numcontainers == 1.
* Also, looks like we might hit a Concurrent modification exception, when we remove the scheduler
keys from the outstanding opportunistic requests.

> Add Node and Rack Hints to Opportunistic Scheduler
> --------------------------------------------------
>                 Key: YARN-7258
>                 URL: https://issues.apache.org/jira/browse/YARN-7258
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun Suresh
>            Assignee: kartheek muthyala
>         Attachments: YARN-7258.001.patch
> Currently, the Opportunistic Scheduler ignores the node and rack information and allocates
strictly on the least loaded node (based on queue length) at the time it received the request.
This JIRA is to track changes needed to allow the OpportunisticContainerAllocator to take
the node/rack name as hints.
> The flow would be:
> # If requested node found in the top K leastLoaded nodes, allocate on that node
> # Else, allocate on least loaded node on the same rack from the top K least Loaded nodes.
> # Else, allocate on least loaded node.

This message was sent by Atlassian JIRA

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

View raw message