[CASSANDRA-7234] Post-compaction cache preheating can result in FileNotFoundExceptions when tables are dropped

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.0.9
• Labels: compaction
• Severity: Low
• Assignee: Marcus Eriksson
• Reporter: Tom Hobbs

Authors

Marcus Eriksson

Reviewers

Tom Hobbs

• Created: 14/May/14 20:35
• Updated: 16/Apr/19 09:31
• Resolved: 12/Jun/14 01:15

Description

In CompactionTask.java, after a compaction finishes, we do this:

        replaceCompactedSSTables(toCompact, sstables);
        // TODO: this doesn't belong here, it should be part of the reader to load when the tracker is wired up
        for (SSTableReader sstable : sstables)
            sstable.preheat(cachedKeyMap.get(sstable.descriptor));

The problem is that if the table was dropped, replaceCompactedSSTables will release its references on the new sstables, resulting in them being closed.