[HDFS-4354] Create DomainSocket and DomainPeer and associated unit tests

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.3-alpha
• Component/s: datanode, hdfs-client, performance
• Target Version/s: 2.0.3-alpha
• Hadoop Flags: Reviewed
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 03/Jan/13 21:19
• Updated: 09/Jan/13 21:40
• Resolved: 09/Jan/13 21:40

Description

Create DomainSocket, a JNI class which provides UNIX domain sockets functionality in Java. Also create DomainPeer, DomainPeerServer. This change also adds a unit test as well as TemporarySocketDirectory.

Finally, this change adds a few C utility methods for handling JNI exceptions, such as newException.