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From "Andras Piros (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6125) The application attempt's diagnostic message should have a maximum size
Date Thu, 09 Feb 2017 01:56:41 GMT

     [ https://issues.apache.org/jira/browse/YARN-6125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andras Piros updated YARN-6125:
-------------------------------
    Attachment: YARN-6125.006.patch

Small Javadoc fix.

> The application attempt's diagnostic message should have a maximum size
> -----------------------------------------------------------------------
>
>                 Key: YARN-6125
>                 URL: https://issues.apache.org/jira/browse/YARN-6125
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.7.0
>            Reporter: Daniel Templeton
>            Assignee: Andras Piros
>            Priority: Critical
>             Fix For: 3.0.0-alpha3
>
>         Attachments: YARN-6125.000.patch, YARN-6125.001.patch, YARN-6125.002.patch, YARN-6125.003.patch,
YARN-6125.004.patch, YARN-6125.005.patch, YARN-6125.006.patch
>
>
> We've found through experience that the diagnostic message can grow unbounded.  I've
seen attempts that have diagnostic messages over 1MB.  Since the message is stored in the
state store, it's a bad idea to allow the message to grow unbounded.  Instead, there should
be a property that sets a maximum size on the message.
> I suspect that some of the ZK state store issues we've seen in the past were due to the
size of the diagnostic messages and not to the size of the classpath, as is the current prevailing
opinion.
> An open question is how best to prune the message once it grows too large.  Should we
> # truncate the tail,
> # truncate the head,
> # truncate the middle,
> # add another property to make the behavior selectable, or
> # none of the above?



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