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Colin Patrick McCabe commented on HADOOP-10522: ----------------------------------------------- Thanks for filing the follow-up, Kihwal. I'll move my responses there. > JniBasedUnixGroupMapping mishandles errors > ------------------------------------------ > > Key: HADOOP-10522 > URL: https://issues.apache.org/jira/browse/HADOOP-10522 > Project: Hadoop Common > Issue Type: Bug > Reporter: Kihwal Lee > Assignee: Kihwal Lee > Priority: Critical > Fix For: 3.0.0, 2.4.1 > > Attachments: hadoop-10522.patch > > > 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)