[KUDU-1785] SIGSEGV if tablet copy attempt started while tablet is bootstrapping

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 1.2.0
• Component/s: tablet
• Target Version/s: 1.2.0
• Code Review: http://gerrit.cloudera.org:8080/5363
• Assignee: Mike Percy
• Reporter: Mike Percy
• Created: 05/Dec/16 16:18
• Updated: 08/Dec/16 16:46
• Resolved: 08/Dec/16 16:46

Description

This is highly unlikely unless triggered by an admin tool.

The bug is as follows:

1. Tablet server restarted, currently bootstrapping a tablet
2. TabletCopySession started for the bootstrapping tablet
3. During the TabletCopySession::Init() phase, we get a Log pointer from a TabletPeer object and use it without checking for nullptr
4. SIGSEGV