You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2014/04/19 00:10:18 UTC

[jira] [Created] (HADOOP-10522) JniBasedUnixGroupMapping mishandles errors

Kihwal Lee created HADOOP-10522:
-----------------------------------

             Summary: JniBasedUnixGroupMapping mishandles errors
                 Key: HADOOP-10522
                 URL: https://issues.apache.org/jira/browse/HADOOP-10522
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Kihwal Lee
            Priority: Critical


The mishandling of errors in the jni user-to-groups mapping modules can cause segmentation faults in subsequent calls.  Here are the bugs:

1) If {{hadoop_user_info_fetch()}} returns an error code that is not ENOENT, the error may not be handled at all.  This bug was found by [~cnauroth].

2)  In {{hadoop_user_info_fetch()}} and {{hadoop_group_info_fetch()}}, the global {{errno}} is directly used. This is not thread-safe and could be the cause of some failures that disappeared after enabling the big lookup lock.

3) In the above methods, there is no limit on retries.



--
This message was sent by Atlassian JIRA
(v6.2#6252)