[HDFS-5986] Capture the number of blocks pending deletion on namenode webUI

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0, 3.0.0-alpha1
• Fix Version/s: 2.4.0
• Component/s: namenode
• Target Version/s: 2.4.0
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Suresh Srinivas
• Created: 20/Feb/14 22:14
• Updated: 12/May/16 18:14
• Resolved: 07/Mar/14 19:54

Description

When a directory that has large number of directories and files are deleted, the namespace deletes the corresponding inodes immediately. However it is hard to to know when the invalidated blocks are actually deleted on the datanodes, which could take a while.

I propose adding on namenode webUI, along with under replicated blocks, the number of blocks that are pending deletion.

Issue Links

• is related to: HDFS-8193 Add the ability to delay replica deletion for a period of time