[CASSANDRA-1722] Unbounded key range only ever scans first node in ring

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 0.6.8, 0.7.0 rc 1
• Severity: Normal
• Assignee: Stu Hood
• Reporter: Jonathan Ellis

Authors

Stu Hood

Reviewers

Jonathan Ellis

• Created: 10/Nov/10 03:20
• Updated: 16/Apr/19 09:33
• Resolved: 10/Nov/10 14:31

Description

        List<AbstractBounds> ranges = getRestrictedRanges(new Bounds(leftToken, p.getMinimumToken()));

when called with empty start key this means we have a Bounds(minToken, minToken), which hits the getRR special case

        // special case for bounds containing exactly 1 token
        if (queryRange instanceof Bounds && queryRange.left.equals(queryRange.right))
        {
            if (logger.isDebugEnabled())
                logger.debug("restricted single token match for query " + queryRange);
            return Collections.singletonList(queryRange);
        }

Looks like this broke as a side effect of CASSANDRA-1442. Prior to that a bounds from [T, minToken] was considered "up to infinity" by getRR so would span multiple nodes.