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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8611) Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails
Date Fri, 20 Jul 2012 13:42:35 GMT
Kihwal Lee created HADOOP-8611:
----------------------------------

             Summary: 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: 2.0.0-alpha, 0.23.0, 1.0.3
            Reporter: Kihwal Lee
            Assignee: Kihwal Lee
             Fix For: 1.1.1, 0.23.3, 3.0.0, 2.2.0-alpha


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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