added force send interface to scan

prepared for using query cache in ndb
parent fee21dd3
...@@ -113,7 +113,7 @@ public: ...@@ -113,7 +113,7 @@ public:
* Reset bounds and put operation in list that will be * Reset bounds and put operation in list that will be
* sent on next execute * sent on next execute
*/ */
int reset_bounds(); int reset_bounds(bool forceSend = false);
bool getSorted() const { return m_ordered; } bool getSorted() const { return m_ordered; }
private: private:
...@@ -127,8 +127,8 @@ private: ...@@ -127,8 +127,8 @@ private:
virtual NdbRecAttr* getValue_impl(const NdbColumnImpl*, char*); virtual NdbRecAttr* getValue_impl(const NdbColumnImpl*, char*);
void fix_get_values(); void fix_get_values();
int next_result_ordered(bool fetchAllowed); int next_result_ordered(bool fetchAllowed, bool forceSend = false);
int send_next_scan_ordered(Uint32 idx); int send_next_scan_ordered(Uint32 idx, bool forceSend = false);
int compare(Uint32 key, Uint32 cols, const NdbReceiver*, const NdbReceiver*); int compare(Uint32 key, Uint32 cols, const NdbReceiver*, const NdbReceiver*);
Uint32 m_sort_columns; Uint32 m_sort_columns;
......
...@@ -89,17 +89,17 @@ public: ...@@ -89,17 +89,17 @@ public:
* - 1: if there are no more tuples to scan. * - 1: if there are no more tuples to scan.
* - 2: if there are no more cached records in NdbApi * - 2: if there are no more cached records in NdbApi
*/ */
int nextResult(bool fetchAllowed = true); int nextResult(bool fetchAllowed = true, bool forceSend = false);
/** /**
* Close result set (scan) * Close result set (scan)
*/ */
void close(); void close(bool forceSend = false);
/** /**
* Restart * Restart
*/ */
int restart(); int restart(bool forceSend = false);
/** /**
* Transfer scan operation to an updating transaction. Use this function * Transfer scan operation to an updating transaction. Use this function
......
...@@ -90,11 +90,11 @@ protected: ...@@ -90,11 +90,11 @@ protected:
NdbScanOperation(Ndb* aNdb); NdbScanOperation(Ndb* aNdb);
virtual ~NdbScanOperation(); virtual ~NdbScanOperation();
int nextResult(bool fetchAllowed = true); int nextResult(bool fetchAllowed = true, bool forceSend = false);
virtual void release(); virtual void release();
void closeScan(); void closeScan(bool forceSend = false);
int close_impl(class TransporterFacade*); int close_impl(class TransporterFacade*, bool forceSend = false);
// Overloaded methods from NdbCursorOperation // Overloaded methods from NdbCursorOperation
int executeCursor(int ProcessorId); int executeCursor(int ProcessorId);
...@@ -103,6 +103,7 @@ protected: ...@@ -103,6 +103,7 @@ protected:
int init(const NdbTableImpl* tab, NdbConnection* myConnection); int init(const NdbTableImpl* tab, NdbConnection* myConnection);
int prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId); int prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId);
int doSend(int ProcessorId); int doSend(int ProcessorId);
void checkForceSend(bool forceSend);
virtual void setErrorCode(int aErrorCode); virtual void setErrorCode(int aErrorCode);
virtual void setErrorCodeAbort(int aErrorCode); virtual void setErrorCodeAbort(int aErrorCode);
...@@ -138,7 +139,7 @@ protected: ...@@ -138,7 +139,7 @@ protected:
Uint32 m_sent_receivers_count; // NOTE needs mutex to access Uint32 m_sent_receivers_count; // NOTE needs mutex to access
NdbReceiver** m_sent_receivers; // receive thread puts them here NdbReceiver** m_sent_receivers; // receive thread puts them here
int send_next_scan(Uint32 cnt, bool close); int send_next_scan(Uint32 cnt, bool close, bool forceSend = false);
void receiver_delivered(NdbReceiver*); void receiver_delivered(NdbReceiver*);
void receiver_completed(NdbReceiver*); void receiver_completed(NdbReceiver*);
void execCLOSE_SCAN_REP(); void execCLOSE_SCAN_REP();
...@@ -148,7 +149,7 @@ protected: ...@@ -148,7 +149,7 @@ protected:
Uint32 m_ordered; Uint32 m_ordered;
int restart(); int restart(bool forceSend = false);
}; };
inline inline
......
...@@ -44,10 +44,10 @@ void NdbResultSet::init() ...@@ -44,10 +44,10 @@ void NdbResultSet::init()
{ {
} }
int NdbResultSet::nextResult(bool fetchAllowed) int NdbResultSet::nextResult(bool fetchAllowed, bool forceSend)
{ {
int res; int res;
if ((res = m_operation->nextResult(fetchAllowed)) == 0) { if ((res = m_operation->nextResult(fetchAllowed, forceSend)) == 0) {
// handle blobs // handle blobs
NdbBlob* tBlob = m_operation->theBlobList; NdbBlob* tBlob = m_operation->theBlobList;
while (tBlob != 0) { while (tBlob != 0) {
...@@ -67,9 +67,9 @@ int NdbResultSet::nextResult(bool fetchAllowed) ...@@ -67,9 +67,9 @@ int NdbResultSet::nextResult(bool fetchAllowed)
return res; return res;
} }
void NdbResultSet::close() void NdbResultSet::close(bool forceSend)
{ {
m_operation->closeScan(); m_operation->closeScan(forceSend);
} }
NdbOperation* NdbOperation*
...@@ -98,6 +98,6 @@ NdbResultSet::deleteTuple(NdbConnection * takeOverTrans){ ...@@ -98,6 +98,6 @@ NdbResultSet::deleteTuple(NdbConnection * takeOverTrans){
} }
int int
NdbResultSet::restart(){ NdbResultSet::restart(bool forceSend){
return m_operation->restart(); return m_operation->restart(forceSend);
} }
...@@ -447,10 +447,11 @@ NdbScanOperation::executeCursor(int nodeId){ ...@@ -447,10 +447,11 @@ NdbScanOperation::executeCursor(int nodeId){
#define DEBUG_NEXT_RESULT 0 #define DEBUG_NEXT_RESULT 0
int NdbScanOperation::nextResult(bool fetchAllowed) int NdbScanOperation::nextResult(bool fetchAllowed, bool forceSend)
{ {
if(m_ordered) if(m_ordered)
return ((NdbIndexScanOperation*)this)->next_result_ordered(fetchAllowed); return ((NdbIndexScanOperation*)this)->next_result_ordered(fetchAllowed,
forceSend);
/** /**
* Check current receiver * Check current receiver
...@@ -487,7 +488,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed) ...@@ -487,7 +488,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
TransporterFacade* tp = TransporterFacade::instance(); TransporterFacade* tp = TransporterFacade::instance();
Guard guard(tp->theMutexPtr); Guard guard(tp->theMutexPtr);
Uint32 seq = theNdbCon->theNodeSequence; Uint32 seq = theNdbCon->theNodeSequence;
if(seq == tp->getNodeSequence(nodeId) && send_next_scan(idx, false) == 0){ if(seq == tp->getNodeSequence(nodeId) && send_next_scan(idx, false,
forceSend) == 0){
idx = m_current_api_receiver; idx = m_current_api_receiver;
last = m_api_receivers_count; last = m_api_receivers_count;
...@@ -578,7 +580,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed) ...@@ -578,7 +580,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
} }
int int
NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag,
bool forceSend){
if(cnt > 0 || stopScanFlag){ if(cnt > 0 || stopScanFlag){
NdbApiSignal tSignal(theNdb->theMyRef); NdbApiSignal tSignal(theNdb->theMyRef);
tSignal.setSignal(GSN_SCAN_NEXTREQ); tSignal.setSignal(GSN_SCAN_NEXTREQ);
...@@ -618,6 +621,8 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){ ...@@ -618,6 +621,8 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){
ret = tp->sendSignal(&tSignal, nodeId); ret = tp->sendSignal(&tSignal, nodeId);
} }
if (!ret) checkForceSend(forceSend);
m_sent_receivers_count = last + cnt + stopScanFlag; m_sent_receivers_count = last + cnt + stopScanFlag;
m_api_receivers_count -= cnt; m_api_receivers_count -= cnt;
m_current_api_receiver = 0; m_current_api_receiver = 0;
...@@ -627,6 +632,15 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){ ...@@ -627,6 +632,15 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){
return 0; return 0;
} }
void NdbScanOperation::checkForceSend(bool forceSend)
{
if (forceSend) {
TransporterFacade::instance()->forceSend(theNdb->theNdbBlockNumber);
} else {
TransporterFacade::instance()->checkForceSend(theNdb->theNdbBlockNumber);
}//if
}
int int
NdbScanOperation::prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId) NdbScanOperation::prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId)
{ {
...@@ -642,7 +656,7 @@ NdbScanOperation::doSend(int ProcessorId) ...@@ -642,7 +656,7 @@ NdbScanOperation::doSend(int ProcessorId)
return 0; return 0;
} }
void NdbScanOperation::closeScan() void NdbScanOperation::closeScan(bool forceSend)
{ {
if(m_transConnection){ if(m_transConnection){
if(DEBUG_NEXT_RESULT) if(DEBUG_NEXT_RESULT)
...@@ -657,7 +671,7 @@ void NdbScanOperation::closeScan() ...@@ -657,7 +671,7 @@ void NdbScanOperation::closeScan()
TransporterFacade* tp = TransporterFacade::instance(); TransporterFacade* tp = TransporterFacade::instance();
Guard guard(tp->theMutexPtr); Guard guard(tp->theMutexPtr);
close_impl(tp); close_impl(tp, forceSend);
} while(0); } while(0);
...@@ -1293,7 +1307,8 @@ NdbIndexScanOperation::compare(Uint32 skip, Uint32 cols, ...@@ -1293,7 +1307,8 @@ NdbIndexScanOperation::compare(Uint32 skip, Uint32 cols,
} }
int int
NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed,
bool forceSend){
Uint32 u_idx = 0, u_last = 0; Uint32 u_idx = 0, u_last = 0;
Uint32 s_idx = m_current_api_receiver; // first sorted Uint32 s_idx = m_current_api_receiver; // first sorted
...@@ -1319,7 +1334,8 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){ ...@@ -1319,7 +1334,8 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
Guard guard(tp->theMutexPtr); Guard guard(tp->theMutexPtr);
Uint32 seq = theNdbCon->theNodeSequence; Uint32 seq = theNdbCon->theNodeSequence;
Uint32 nodeId = theNdbCon->theDBnode; Uint32 nodeId = theNdbCon->theDBnode;
if(seq == tp->getNodeSequence(nodeId) && !send_next_scan_ordered(s_idx)){ if(seq == tp->getNodeSequence(nodeId) &&
!send_next_scan_ordered(s_idx, forceSend)){
Uint32 tmp = m_sent_receivers_count; Uint32 tmp = m_sent_receivers_count;
s_idx = m_current_api_receiver; s_idx = m_current_api_receiver;
while(m_sent_receivers_count > 0 && !theError.code){ while(m_sent_receivers_count > 0 && !theError.code){
...@@ -1408,7 +1424,7 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){ ...@@ -1408,7 +1424,7 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
} }
int int
NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx){ NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx, bool forceSend){
if(idx == theParallelism) if(idx == theParallelism)
return 0; return 0;
...@@ -1440,11 +1456,13 @@ NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx){ ...@@ -1440,11 +1456,13 @@ NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx){
Uint32 nodeId = theNdbCon->theDBnode; Uint32 nodeId = theNdbCon->theDBnode;
TransporterFacade * tp = TransporterFacade::instance(); TransporterFacade * tp = TransporterFacade::instance();
tSignal.setLength(4+1); tSignal.setLength(4+1);
return tp->sendSignal(&tSignal, nodeId); int ret= tp->sendSignal(&tSignal, nodeId);
if (!ret) checkForceSend(forceSend);
return ret;
} }
int int
NdbScanOperation::close_impl(TransporterFacade* tp){ NdbScanOperation::close_impl(TransporterFacade* tp, bool forceSend){
Uint32 seq = theNdbCon->theNodeSequence; Uint32 seq = theNdbCon->theNodeSequence;
Uint32 nodeId = theNdbCon->theDBnode; Uint32 nodeId = theNdbCon->theDBnode;
...@@ -1473,7 +1491,7 @@ NdbScanOperation::close_impl(TransporterFacade* tp){ ...@@ -1473,7 +1491,7 @@ NdbScanOperation::close_impl(TransporterFacade* tp){
if(m_api_receivers_count+m_conf_receivers_count){ if(m_api_receivers_count+m_conf_receivers_count){
// Send close scan // Send close scan
if(send_next_scan(0, true) == -1){ // Close scan if(send_next_scan(0, true, forceSend) == -1){ // Close scan
theNdbCon->theReleaseOnClose = true; theNdbCon->theReleaseOnClose = true;
return -1; return -1;
} }
...@@ -1520,7 +1538,7 @@ NdbScanOperation::reset_receivers(Uint32 parallell, Uint32 ordered){ ...@@ -1520,7 +1538,7 @@ NdbScanOperation::reset_receivers(Uint32 parallell, Uint32 ordered){
} }
int int
NdbScanOperation::restart() NdbScanOperation::restart(bool forceSend)
{ {
TransporterFacade* tp = TransporterFacade::instance(); TransporterFacade* tp = TransporterFacade::instance();
...@@ -1529,7 +1547,7 @@ NdbScanOperation::restart() ...@@ -1529,7 +1547,7 @@ NdbScanOperation::restart()
{ {
int res; int res;
if((res= close_impl(tp))) if((res= close_impl(tp, forceSend)))
{ {
return res; return res;
} }
...@@ -1548,13 +1566,13 @@ NdbScanOperation::restart() ...@@ -1548,13 +1566,13 @@ NdbScanOperation::restart()
} }
int int
NdbIndexScanOperation::reset_bounds(){ NdbIndexScanOperation::reset_bounds(bool forceSend){
int res; int res;
{ {
TransporterFacade* tp = TransporterFacade::instance(); TransporterFacade* tp = TransporterFacade::instance();
Guard guard(tp->theMutexPtr); Guard guard(tp->theMutexPtr);
res= close_impl(tp); res= close_impl(tp, forceSend);
} }
if(!res) if(!res)
......
...@@ -1247,7 +1247,7 @@ inline int ha_ndbcluster::next_result(byte *buf) ...@@ -1247,7 +1247,7 @@ inline int ha_ndbcluster::next_result(byte *buf)
m_ops_pending= 0; m_ops_pending= 0;
m_blobs_pending= FALSE; m_blobs_pending= FALSE;
} }
check= cursor->nextResult(contact_ndb); check= cursor->nextResult(contact_ndb, m_force_send);
if (check == 0) if (check == 0)
{ {
// One more record found // One more record found
...@@ -1540,7 +1540,7 @@ int ha_ndbcluster::ordered_index_scan(const key_range *start_key, ...@@ -1540,7 +1540,7 @@ int ha_ndbcluster::ordered_index_scan(const key_range *start_key,
DBUG_ASSERT(op->getSorted() == sorted); DBUG_ASSERT(op->getSorted() == sorted);
DBUG_ASSERT(op->getLockMode() == DBUG_ASSERT(op->getLockMode() ==
(NdbOperation::LockMode)get_ndb_lock_type(m_lock.type)); (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type));
if(op->reset_bounds()) if(op->reset_bounds(m_force_send))
DBUG_RETURN(ndb_err(m_active_trans)); DBUG_RETURN(ndb_err(m_active_trans));
} }
...@@ -2367,7 +2367,7 @@ int ha_ndbcluster::index_last(byte *buf) ...@@ -2367,7 +2367,7 @@ int ha_ndbcluster::index_last(byte *buf)
int res; int res;
if((res= ordered_index_scan(0, 0, TRUE, buf)) == 0){ if((res= ordered_index_scan(0, 0, TRUE, buf)) == 0){
NdbResultSet *cursor= m_active_cursor; NdbResultSet *cursor= m_active_cursor;
while((res= cursor->nextResult(TRUE)) == 0); while((res= cursor->nextResult(TRUE, m_force_send)) == 0);
if(res == 1){ if(res == 1){
unpack_record(buf); unpack_record(buf);
table->status= 0; table->status= 0;
...@@ -2453,7 +2453,7 @@ int ha_ndbcluster::rnd_init(bool scan) ...@@ -2453,7 +2453,7 @@ int ha_ndbcluster::rnd_init(bool scan)
{ {
if (!scan) if (!scan)
DBUG_RETURN(1); DBUG_RETURN(1);
int res= cursor->restart(); int res= cursor->restart(m_force_send);
DBUG_ASSERT(res == 0); DBUG_ASSERT(res == 0);
} }
index_init(table->primary_key); index_init(table->primary_key);
...@@ -2484,7 +2484,7 @@ int ha_ndbcluster::close_scan() ...@@ -2484,7 +2484,7 @@ int ha_ndbcluster::close_scan()
m_ops_pending= 0; m_ops_pending= 0;
} }
cursor->close(); cursor->close(m_force_send);
m_active_cursor= NULL; m_active_cursor= NULL;
DBUG_RETURN(0); DBUG_RETURN(0);
} }
...@@ -3004,6 +3004,7 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type) ...@@ -3004,6 +3004,7 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
m_transaction_on= FALSE; m_transaction_on= FALSE;
else else
m_transaction_on= thd->variables.ndb_use_transactions; m_transaction_on= thd->variables.ndb_use_transactions;
// m_use_local_query_cache= thd->variables.ndb_use_local_query_cache;
m_active_trans= thd->transaction.all.ndb_tid ? m_active_trans= thd->transaction.all.ndb_tid ?
(NdbConnection*)thd->transaction.all.ndb_tid: (NdbConnection*)thd->transaction.all.ndb_tid:
...@@ -3728,7 +3729,8 @@ ha_ndbcluster::ha_ndbcluster(TABLE *table_arg): ...@@ -3728,7 +3729,8 @@ ha_ndbcluster::ha_ndbcluster(TABLE *table_arg):
m_ha_not_exact_count(FALSE), m_ha_not_exact_count(FALSE),
m_force_send(TRUE), m_force_send(TRUE),
m_autoincrement_prefetch(32), m_autoincrement_prefetch(32),
m_transaction_on(TRUE) m_transaction_on(TRUE),
m_use_local_query_cache(FALSE)
{ {
int i; int i;
...@@ -4415,7 +4417,7 @@ bool ha_ndbcluster::low_byte_first() const ...@@ -4415,7 +4417,7 @@ bool ha_ndbcluster::low_byte_first() const
} }
bool ha_ndbcluster::has_transactions() bool ha_ndbcluster::has_transactions()
{ {
return TRUE; return m_transaction_on;
} }
const char* ha_ndbcluster::index_type(uint key_number) const char* ha_ndbcluster::index_type(uint key_number)
{ {
...@@ -4432,7 +4434,10 @@ const char* ha_ndbcluster::index_type(uint key_number) ...@@ -4432,7 +4434,10 @@ const char* ha_ndbcluster::index_type(uint key_number)
} }
uint8 ha_ndbcluster::table_cache_type() uint8 ha_ndbcluster::table_cache_type()
{ {
return HA_CACHE_TBL_NOCACHE; if (m_use_local_query_cache)
return HA_CACHE_TBL_TRANSACT;
else
return HA_CACHE_TBL_NOCACHE;
} }
/* /*
...@@ -4600,13 +4605,12 @@ ndb_get_table_statistics(Ndb* ndb, const char * table, ...@@ -4600,13 +4605,12 @@ ndb_get_table_statistics(Ndb* ndb, const char * table,
{ {
DBUG_ENTER("ndb_get_table_statistics"); DBUG_ENTER("ndb_get_table_statistics");
DBUG_PRINT("enter", ("table: %s", table)); DBUG_PRINT("enter", ("table: %s", table));
NdbConnection* pTrans= ndb->startTransaction();
do do
{ {
NdbConnection* pTrans= ndb->startTransaction();
if (pTrans == NULL) if (pTrans == NULL)
break; break;
NdbScanOperation* pOp= pTrans->getNdbScanOperation(table); NdbScanOperation* pOp= pTrans->getNdbScanOperation(table);
if (pOp == NULL) if (pOp == NULL)
break; break;
...@@ -4623,13 +4627,13 @@ ndb_get_table_statistics(Ndb* ndb, const char * table, ...@@ -4623,13 +4627,13 @@ ndb_get_table_statistics(Ndb* ndb, const char * table,
pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&rows); pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&rows);
pOp->getValue(NdbDictionary::Column::COMMIT_COUNT, (char*)&commits); pOp->getValue(NdbDictionary::Column::COMMIT_COUNT, (char*)&commits);
check= pTrans->execute(NoCommit); check= pTrans->execute(NoCommit, AbortOnError, TRUE);
if (check == -1) if (check == -1)
break; break;
Uint64 sum_rows= 0; Uint64 sum_rows= 0;
Uint64 sum_commits= 0; Uint64 sum_commits= 0;
while((check= rs->nextResult(TRUE)) == 0) while((check= rs->nextResult(TRUE, TRUE)) == 0)
{ {
sum_rows+= rows; sum_rows+= rows;
sum_commits+= commits; sum_commits+= commits;
...@@ -4638,6 +4642,8 @@ ndb_get_table_statistics(Ndb* ndb, const char * table, ...@@ -4638,6 +4642,8 @@ ndb_get_table_statistics(Ndb* ndb, const char * table,
if (check == -1) if (check == -1)
break; break;
rs->close(TRUE);
ndb->closeTransaction(pTrans); ndb->closeTransaction(pTrans);
if(row_count) if(row_count)
* row_count= sum_rows; * row_count= sum_rows;
...@@ -4647,6 +4653,7 @@ ndb_get_table_statistics(Ndb* ndb, const char * table, ...@@ -4647,6 +4653,7 @@ ndb_get_table_statistics(Ndb* ndb, const char * table,
DBUG_RETURN(0); DBUG_RETURN(0);
} while(0); } while(0);
ndb->closeTransaction(pTrans);
DBUG_PRINT("exit", ("failed")); DBUG_PRINT("exit", ("failed"));
DBUG_RETURN(-1); DBUG_RETURN(-1);
} }
......
...@@ -238,10 +238,12 @@ class ha_ndbcluster: public handler ...@@ -238,10 +238,12 @@ class ha_ndbcluster: public handler
char *m_blobs_buffer; char *m_blobs_buffer;
uint32 m_blobs_buffer_size; uint32 m_blobs_buffer_size;
uint m_dupkey; uint m_dupkey;
// set from thread variables at external lock
bool m_ha_not_exact_count; bool m_ha_not_exact_count;
bool m_force_send; bool m_force_send;
ha_rows m_autoincrement_prefetch; ha_rows m_autoincrement_prefetch;
bool m_transaction_on; bool m_transaction_on;
bool m_use_local_query_cache;
void set_rec_per_key(); void set_rec_per_key();
void records_update(); void records_update();
......
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