hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jun Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3480) Recovery may get very slow with lots of services with lots of app-attempts
Date Thu, 21 May 2015 00:59:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-3480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14553451#comment-14553451
] 

Jun Gong commented on YARN-3480:
--------------------------------

{quote}
Without doing this, we will unnecessarily be forcing apps to lose history simply because the
platform cannot recover quickly enough.
Thinking more, how about we only have (limits + asynchronous recovery) for services, once
YARN-1039 goes in? Non-service apps anyways are not expected to have a lot of app-attempts.
{quote}

It is reasonable. I will update the patch once YARN-1039 goes in.

> Recovery may get very slow with lots of services with lots of app-attempts
> --------------------------------------------------------------------------
>
>                 Key: YARN-3480
>                 URL: https://issues.apache.org/jira/browse/YARN-3480
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>         Attachments: YARN-3480.01.patch, YARN-3480.02.patch, YARN-3480.03.patch, YARN-3480.04.patch
>
>
> When RM HA is enabled and running containers are kept across attempts, apps are more
likely to finish successfully with more retries(attempts), so it will be better to set 'yarn.resourcemanager.am.max-attempts'
larger. However it will make RMStateStore(FileSystem/HDFS/ZK) store more attempts, and make
RM recover process much slower. It might be better to set max attempts to be stored in RMStateStore.
> BTW: When 'attemptFailuresValidityInterval'(introduced in YARN-611) is set to a small
value, retried attempts might be very large. So we need to delete some attempts stored in
RMStateStore and RMStateStore.



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

Mime
View raw message