[CASSANDRA-2381] orphaned data files may be created during migration race

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.7.5
• Severity: Low
• Assignee: Jonathan Ellis
• Reporter: Jonathan Ellis

Authors

Jonathan Ellis

Reviewers

Gary Dusbabek

• Created: 24/Mar/11 20:55
• Updated: 16/Apr/19 09:33
• Resolved: 28/Mar/11 19:07

Description

We try to prevent creating orphans by locking Table.flusherLock in maybeSwitchMemtable and the Migration process, but since the actual writing is done asynchronously in Memtable.writeSortedContents there is a race window, where we acquire lock in maybeSwitch, we're not dropped so we queue the flush and release the lock, Migration does the drop, then Memtable writes itself out.