[KUDU-678] An empty delta block is orphaned when flushing or compacting with no edits

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Private Beta
• Fix Version/s: 0.9.0
• Component/s: tablet
• Target Version/s: 1.2.0
• Code Review: http://gerrit.cloudera.org:8080/3100
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 24/Mar/15 18:37
• Updated: 18/May/16 20:35
• Resolved: 18/May/16 20:35

Description

Currently when the DRS writer writes an empty undo file, it doesn't add it to the RowSetMetadata. But, the block itself is still closed and left around in the BlockManager, causing a tiny data leak. These files are going to be small, so it's not a big deal, but we ought to fix it.

Issue Links

• relates to: KUDU-1237 When compaction generates no output, blocks are leaked