[HDFS-5717] Save FSImage header in protobuf

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-5698 (FSImage in protobuf)
• Fix Version/s: HDFS-5698 (FSImage in protobuf)
• Target Version/s: HDFS-5698 (FSImage in protobuf)
• Hadoop Flags: Reviewed
• Assignee: Haohui Mai
• Reporter: Haohui Mai
• Created: 04/Jan/14 00:50
• Updated: 09/Jan/14 01:42
• Resolved: 09/Jan/14 01:42

Description

This jira introduces several basic components to serialize / deserialize the FSImage in protobuf, including:

• Using protobuf to describe the skeleton of the new FSImage format.
• Introducing a separate code path to serialize and deserialize the new FSImage format.
• Saving the summary of the FSImage in the new format.