[CASSANDRA-4778] leveled compaction does less work in L0 than intended

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 1.1.6
• Labels: compaction lcs
• Severity: Low
• Assignee: Jonathan Ellis
• Reporter: Jonathan Ellis

Authors

Jonathan Ellis

Reviewers

Yuki Morishita

• Created: 08/Oct/12 22:40
• Updated: 16/Apr/19 09:32
• Resolved: 09/Oct/12 03:49

Description

We have this code in the candidate loop:

.               if (SSTable.getTotalBytes(candidates) > maxSSTableSizeInBytes)
                {
                    // add sstables from L1 that overlap candidates
                    candidates.addAll(overlapping(candidates, generations[1]));
                    break;
                }

thus, as soon as we have enough to compact to make one L1 sstable's worth of data, we stop collecting candidates.