[KUDU-1769] Add a tool to garbage collect orphan data blocks

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Component/s: tablet
• Code Review: http://gerrit.cloudera.org:8080/6361
• Assignee: Adar Dembo
• Reporter: Dinesh Bhat
• Created: 29/Nov/16 19:42
• Updated: 17/Mar/17 18:44
• Resolved: 17/Mar/17 18:44

Description

There could be cases where we find orphan data blocks not referenced by any tablet metadata:

• Crash during a flush/compaction
• Crash during a tablet copy could orphan the data blocks copied so far.
• Bugs

In such situations, it is useful to have a manual tool to delete all the orphan data blocks for which there are no metadata.

Issue Links

• relates to: KUDU-829 Support online GC of orphaned data blocks