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Merge pull request #258 from mariadb-corporation/MCOL-859-1.0

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MCOL-859 DDL System catalog mutex deadlock
This commit is contained in:
David.Hall
2017-09-15 10:18:55 -05:00
committed by GitHub
parent 729105e793 f15b2390a3
commit 40e0f6296d
2 changed files with 4 additions and 3 deletions
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4
dbcon/execplan/calpontsystemcatalog.cpp
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@ -1187,7 +1187,7 @@ const CalpontSystemCatalog::ColType CalpontSystemCatalog::colTypeDct(const OID&
}
// check map first cached column type
boost::mutex::scoped_lock lk3(fDctTokenMapLock);
boost::recursive_mutex::scoped_lock lk3(fDctTokenMapLock);
DctTokenMap::const_iterator iter = fDctTokenMap.find(dictOid);
if (iter != fDctTokenMap.end())
return colType(iter->second);
@ -5317,7 +5317,7 @@ void CalpontSystemCatalog::flushCache()
buildSysTablemap();
lk3.unlock();
boost::mutex::scoped_lock lk4(fDctTokenMapLock);
boost::recursive_mutex::scoped_lock lk4(fDctTokenMapLock);
fDctTokenMap.clear();
buildSysDctmap();
lk4.unlock();

3
dbcon/execplan/calpontsystemcatalog.h
View File

@ -869,7 +869,8 @@ private:
typedef std::map<OID, OID> DctTokenMap;
DctTokenMap fDctTokenMap;
boost::mutex fDctTokenMapLock;
// MCOL-859: this can lock when already locked in the same thread
boost::recursive_mutex fDctTokenMapLock;
typedef std::map<OID, TableName> TableNameMap;
TableNameMap fTableNameMap;