[jira] [Updated] (HADOOP-8611) Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails

["Robert Parker (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-8611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Parker updated HADOOP-8611:
----------------------------------

    Attachment: HADOOP-8611.patch
    
> Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8611
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8611
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 1.0.3, 0.23.0, 2.0.0-alpha
>            Reporter: Kihwal Lee
>            Assignee: Robert Parker
>             Fix For: 1.1.1, 0.23.3, 3.0.0, 2.2.0-alpha
>
>         Attachments: HADOOP-8611.patch
>
>
> When the JNI-based users-group mapping is enabled, the process/command will fail if the native library, libhadoop.so, cannot be found. This mostly happens at client-side where users may use hadoop programatically. Instead of failing, falling back to the shell-based implementation will be desirable. Depending on how cluster is configured, use of the native netgroup mapping cannot be subsituted by the shell-based default. For this reason, this behavior must be configurable with the default being "disabled".

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