[HDFS-10875] Optimize du -x to cache intermediate result

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha2
• Component/s: snapshots
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Xiao Chen
• Reporter: Xiao Chen
• Created: 19/Sep/16 23:53
• Updated: 20/Sep/16 05:52
• Resolved: 20/Sep/16 04:53

Description

As jingzhao pointed out in HDFS-8986, we can save a computeContentSummary4Snapshot call in INodeDirectory#computeContentSummary.

Issue Links

• relates to: HDFS-8986 Add option to -du to calculate directory space usage excluding snapshots