[HADOOP-9232] JniBasedUnixGroupsMappingWithFallback fails on Windows with UnsatisfiedLinkError

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: trunk-win
• Fix Version/s: trunk-win
• Component/s: native, security
• Target Version/s: trunk-win
• Hadoop Flags: Reviewed
• Assignee: Ivan Mitic
• Reporter: Chris Nauroth
• Created: 22/Jan/13 07:24
• Updated: 10/Jul/13 17:55
• Resolved: 05/Mar/13 02:22

Description

JniBasedUnixGroupsMapping calls native code which isn't implemented properly for Windows, causing UnsatisfiedLinkError. The fallback logic in JniBasedUnixGroupsMappingWithFallback works by checking if the native code is loaded during startup. In this case, hadoop.dll is present and loaded, but it doesn't contain the right code. There will be no attempt to fallback to ShellBasedUnixGroupsMapping.

Issue Links

• is broken by: HADOOP-8712 Change default hadoop.security.group.mapping
• is related to: HADOOP-9312 JniBasedUnixGroupsMapping#getGroupForUser can potentially leak memory
• is required by: HADOOP-9290 Some tests cannot load native library
• relates to: HADOOP-9718 Branch-1-win TestGroupFallback#testGroupWithFallback() failed caused by java.lang.UnsatisfiedLinkError