Robert Stupp created CASSANDRA-10998: ----------------------------------------
Summary: Snapshots can fail during compactions Key: CASSANDRA-10998 URL: https://issues.apache.org/jira/browse/CASSANDRA-10998 Project: Cassandra Issue Type: Improvement Reporter: Robert Stupp Priority: Minor In an unlucky, unlikely and rare situation, a snapshot can fail when sstables are removed (due to compaction) while the snapshots being taken. So - for example: # Compaction starts (compact sstable 1, 2, 3 to 4) # Snapshot operation starts with sstables 1, 2, 3 # Compaction removes sstables 1, 2, 3 # Snapshot tries to hard link to sstables 1, 2, 3 - failure I think it's a very rare but still possible race condition manifesting in {{SSTableReader#createLinks}}, which has been mitigated by CASSANDRA-7066 for 3.0 (introduced a {{File.exists}} before the actual creation of the hard link). The problem without CASSANDRA-7066 is, that the snapshot just fails. The problem with the if-clause is that the snapshot is inconsistent as it may not contain all sstable components or even not all sstables without a failure. -- This message was sent by Atlassian JIRA (v6.3.4#6332)