[CASSANDRA-12776] when memtable flush Statistics thisOffHeap error

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.0.10, 3.10
• Labels: lhf
• Severity: Low
• Assignee: Kurt Greaves
• Reporter: scott.zhai

Authors

Kurt Greaves

Reviewers

Jeff Jirsa

• Created: 12/Oct/16 03:43
• Updated: 16/Apr/19 09:30
• Resolved: 19/Oct/16 01:19

Description

if (largest != null)
            {
                float usedOnHeap = Memtable.MEMORY_POOL.onHeap.usedRatio();
                float usedOffHeap = Memtable.MEMORY_POOL.offHeap.usedRatio();
                float flushingOnHeap = Memtable.MEMORY_POOL.onHeap.reclaimingRatio();
                float flushingOffHeap = Memtable.MEMORY_POOL.offHeap.reclaimingRatio();
                float thisOnHeap = largest.getAllocator().onHeap().ownershipRatio();
                float thisOffHeap = largest.getAllocator().onHeap().ownershipRatio();
                logger.info("Flushing largest {} to free up room. Used total: {}, live: {}, flushing: {}, this: {}",
                            largest.cfs, ratio(usedOnHeap, usedOffHeap), ratio(liveOnHeap, liveOffHeap),
                            ratio(flushingOnHeap, flushingOffHeap), ratio(thisOnHeap, thisOffHeap));
                largest.cfs.switchMemtableIfCurrent(largest);
            }

Should:

float thisOffHeap = largest.getAllocator().onHeap().ownershipRatio();

Be:

offHeap().ownershipRatio();