hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2229) ContainerId can overflow with RM restart
Date Fri, 07 Nov 2014 19:26:36 GMT

    [ https://issues.apache.org/jira/browse/YARN-2229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14202511#comment-14202511
] 

Jonathan Eagles commented on YARN-2229:
---------------------------------------

FYI: Filed YARN-2830 to help tez deal with this internal api change in yarn.

> ContainerId can overflow with RM restart
> ----------------------------------------
>
>                 Key: YARN-2229
>                 URL: https://issues.apache.org/jira/browse/YARN-2229
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>             Fix For: 2.6.0
>
>         Attachments: YARN-2229.1.patch, YARN-2229.10.patch, YARN-2229.10.patch, YARN-2229.11.patch,
YARN-2229.12.patch, YARN-2229.13.patch, YARN-2229.14.patch, YARN-2229.15.patch, YARN-2229.16.patch,
YARN-2229.2.patch, YARN-2229.2.patch, YARN-2229.3.patch, YARN-2229.4.patch, YARN-2229.5.patch,
YARN-2229.6.patch, YARN-2229.7.patch, YARN-2229.8.patch, YARN-2229.9.patch
>
>
> On YARN-2052, we changed containerId format: upper 10 bits are for epoch, lower 22 bits
are for sequence number of Ids. This is for preserving semantics of {{ContainerId#getId()}},
{{ContainerId#toString()}}, {{ContainerId#compareTo()}}, {{ContainerId#equals}}, and {{ConverterUtils#toContainerId}}.
One concern is epoch can overflow after RM restarts 1024 times.
> To avoid the problem, its better to make containerId long. We need to define the new
format of container Id with preserving backward compatibility on this JIRA.



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

Mime
View raw message