[HADOOP-10087] UserGroupInformation.getGroupNames() fails to return primary group first when JniBasedUnixGroupsMappingWithFallback is used

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0-beta, 2.2.0
• Fix Version/s: 2.3.0
• Component/s: security
• Labels: security

Environment

SUSE Linux Enterprise Server 11 (x86_64)

• Target Version/s: 2.3.0
• Assignee: Colin McCabe
• Reporter: Yu Gao
• Created: 08/Nov/13 19:37
• Updated: 11/Mar/14 03:22
• Resolved: 11/Dec/13 18:58

Description

When JniBasedUnixGroupsMappingWithFallback is used as the group mapping resolution provider, UserGroupInformation.getGroupNames() fails to return the primary group first in the list as documented.

Issue Links

• relates to: HADOOP-10401 ShellBasedUnixGroupsMapping#getGroups does not always return primary group first