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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1519) check if sysconf is implemented before using it
Date Thu, 19 Dec 2013 01:17:07 GMT

     [ https://issues.apache.org/jira/browse/YARN-1519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Radim Kolar updated YARN-1519:
------------------------------

    Attachment: nodemgr-sysconf.txt

fixed reported case and also removed compiler warning in while loop.

> check if sysconf is implemented before using it
> -----------------------------------------------
>
>                 Key: YARN-1519
>                 URL: https://issues.apache.org/jira/browse/YARN-1519
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 3.0.0, 2.3.0
>            Reporter: Radim Kolar
>         Attachments: nodemgr-sysconf.txt
>
>
> If sysconf value _SC_GETPW_R_SIZE_MAX is not implemented, it leads to segfault because
invalid pointer gets passed to libc function.
> fix: enforce minimum value 1024, same method is used in hadoop-common native code.



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