[HDFS-12681] Make HdfsLocatedFileStatus a subtype of LocatedFileStatus

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Target Version/s: 3.1.0
• Hadoop Flags: Incompatible change, Reviewed
• Release Note: FileStatus.flags() and FileStatus.setSnapShotEnabledFlag () which were added in Hadoop 3.0.3, were removed.
• Assignee: Christopher Douglas
• Reporter: Christopher Douglas
• Created: 18/Oct/17 21:38
• Updated: 05/Oct/21 02:16
• Resolved: 30/Nov/17 04:32

Description

HdfsLocatedFileStatus is a subtype of HdfsFileStatus, but not of LocatedFileStatus. Conversion requires copying common fields and shedding unknown data. It would be cleaner and sufficient for HdfsFileStatus to extend LocatedFileStatus.

Issue Links

• breaks: HDFS-12970 HdfsFileStatus#getPath returning null.
• causes: HDFS-16044 Fix getListing call getLocatedBlocks even source is a directory
• depends upon: HDFS-12582 Replace HdfsFileStatus constructor with a builder pattern.
• is related to: HDFS-14583 FileStatus#toString() will throw IllegalArgumentException
• is related to: HDFS-12455 WebHDFS - Adding "snapshot enabled" status to ListStatus query result.
• relates to: HDFS-7878 API - expose a unique file identifier