[jira] [Created] (YARN-1519) check if sysconf is implemented before using it

[Radim Kolar (JIRA)]

Radim Kolar created YARN-1519:
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             Summary: 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


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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