Todd Lipcon created KUDU-1692:
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Summary: Deleting large tablets causes a lot of tcmalloc contention
Key: KUDU-1692
URL: https://issues.apache.org/jira/browse/KUDU-1692
Project: Kudu
Issue Type: Bug
Components: tablet, util
Affects Versions: 1.0.0
Reporter: Todd Lipcon
I deleted a large table which contained about 1TB of data per tablet server.
The tablet servers then started spending a large amount of time in this stack:
{code}
855e94 tcmalloc::ThreadCache::GetThreadStats(unsigned long*,
unsigned long*)
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
84e9ba ExtractStats(TCMallocStats*, unsigned long*,
tcmalloc::PageHeap::SmallSpanStats*, tcmalloc::PageHeap::LargeSpanStats*)
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-releas
850f8f TCMallocImplementation::GetNumericProperty(char
const*, unsigned long*)
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
1a18c50 kudu::GetTCMallocCurrentAllocatedBytes()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
1a19a50 kudu::MemTracker::UpdateConsumption()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
980f01 std::_Sp_counted_ptr<kudu::cfile::CFileReader*,
(__gnu_cxx::_Lock_policy)2>::_M_dispose()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
99a937 kudu::tablet::CFileSet::~CFileSet()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
99ad61 kudu::tablet::CFileSet::~CFileSet()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
948b42 kudu::tablet::DiskRowSet::~DiskRowSet()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
965f35 kudu::tablet::RowSetTree::~RowSetTree()
(/opt/cloudera/parcels/KUDU-1.0.0-1.kudu1.0.0.p0.6/lib/kudu/sbin-release/kudu-tserver)
{code}
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