[HDFS-11641] Reduce cost of audit logging by using FileStatus instead of HdfsFileStatus

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.9.0, 3.0.0-alpha4, 2.8.2
• Component/s: hdfs
• Target Version/s: 2.8.2
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 11/Apr/17 17:20
• Updated: 24/Apr/18 20:49
• Resolved: 16/May/17 20:57

Description

Audit logging operations create a HdfsFileStatus but audit logging promptly converts it to a FileStatus to pass to the loggers. A HdfsFileStatus is more expensive to create, ex. multiple node to root scans for feature info that will only be discarded in the conversion to FileStatus. Operations should create a FileStatus to eliminate all the superfluous overhead.

Issue Links

• is related to: HDFS-12379 NameNode getListing should use FileStatus instead of HdfsFileStatus
• relates to: HDFS-958 Remove uneccessary creation of FileStatus objects in NameNode