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mariadb-columnstore-engine/dbcon/mysql/ha_mcs_dml.cpp

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/* Copyright (C) 2014 InfiniDB, Inc.
Copyright (C) 2019 MariaDB Corporation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of
the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA. */
/*
* $Id: ha_mcs_dml.cpp 9711 2013-07-23 21:01:27Z chao $
*/
#include <my_config.h>
#include <string>
#include <iostream>
#include <stack>
#ifdef _MSC_VER
#include <unordered_map>
#include <unordered_set>
#else
#include <tr1/unordered_map>
#include <tr1/unordered_set>
#endif
#include <fstream>
#include <sstream>
#include <cerrno>
#include <cstring>
using namespace std;
#include <boost/shared_ptr.hpp>
using namespace boost;
#include "idb_mysql.h"
#define NEED_CALPONT_INTERFACE
#include "ha_mcs_impl.h"
#include "ha_mcs_impl_if.h"
using namespace cal_impl_if;
#include "vendordmlstatement.h"
#include "calpontdmlpackage.h"
#include "calpontdmlfactory.h"
using namespace dmlpackage;
#include "dmlpackageprocessor.h"
using namespace dmlpackageprocessor;
#include "dataconvert.h"
using namespace dataconvert;
#include "bytestream.h"
using namespace messageqcpp;
#include "configcpp.h"
using namespace config;
#include "calpontsystemcatalog.h"
using namespace execplan;
#include "resourcemanager.h"
using namespace joblist;
//#include "stopwatch.h"
//using namespace logging;
#include "dbrm.h"
#include "ha_mcs_datatype.h"
namespace
{
#define BATCH_INSERT_GROUP_ROWS_FOR_CACHE 100000
uint64_t fBatchInsertGroupRows = 0; // ResourceManager::instance()->getRowsPerBatch();
// HDFS is never used nowadays, so don't bother
bool useHdfs = false; // ResourceManager::instance()->useHdfs();
//convenience fcn
inline uint32_t tid2sid(const uint32_t tid)
{
return execplan::CalpontSystemCatalog::idb_tid2sid(tid);
}
//StopWatch timer;
uint32_t buildValueList (TABLE* table, cal_connection_info& ci )
{
char attribute_buffer[1024];
String attribute(attribute_buffer, sizeof(attribute_buffer),
&my_charset_bin);
uint32_t size = 0;
int columnPos = 0;
double dbval;
ci.nullValuesBitset.reset();
for (Field** field = table->field; *field; field++)
{
if ((*field)->is_null())
{
ci.tableValuesMap[columnPos].push_back (""); //currently, empty string is treated as null.
ci.nullValuesBitset[columnPos] = true;
}
else
{
bitmap_set_bit(table->read_set, (*field)->field_index);
ci.nullValuesBitset[columnPos] = false;
// @bug 3798 get real value for float/double type
if ((*field)->result_type() == REAL_RESULT)
{
dbval = (*field)->val_real();
//int maxlen = (*field)->max_display_length();
const unsigned maxlen = 1024 + 1 + 1 + 1; //1 for leading zero, 1 for dp, 1 for null
char buf[maxlen];
memset(buf, 0, maxlen);
snprintf(buf, maxlen, "%.1024f", dbval);
ci.tableValuesMap[columnPos].push_back(buf);
}
else
{
//fetch different data type
(*field)->val_str(&attribute, &attribute);
if (attribute.length() == 0)
{
ci.tableValuesMap[columnPos].push_back (""); //currently, empty string is treated as null.
}
else
{
string val(attribute.ptr(), attribute.length());
ci.tableValuesMap[columnPos].push_back(val);
}
}
}
ci.colNameList.push_back((*field)->field_name.str);
columnPos++;
}
size = ci.tableValuesMap[0].size();
return size;
}
int ProcessCommandStatement(THD* thd, string& dmlStatement, cal_connection_info& ci, std::string schema = "")
{
int rc = 0;
ulong sessionID = tid2sid(thd->thread_id);
CalpontDMLPackage* pDMLPackage;
//@Bug 2721 and 2722. Log the statement before issuing commit/rollback
if ( dmlStatement == "LOGGING" )
{
char* query_char = idb_mysql_query_str(thd);
std::string query_str;
if (!query_char)
{
query_str = "<Replication event>";
}
else
{
query_str = query_char;
}
VendorDMLStatement cmdStmt(query_str, DML_COMMAND, sessionID);
cmdStmt.set_Logging( false );
pDMLPackage = CalpontDMLFactory::makeCalpontDMLPackageFromMysqlBuffer(cmdStmt);
pDMLPackage->set_Logging( false );
pDMLPackage->set_SchemaName( schema );
}
else
{
VendorDMLStatement cmdStmt(dmlStatement, DML_COMMAND, sessionID);
pDMLPackage = CalpontDMLFactory::makeCalpontDMLPackageFromMysqlBuffer(cmdStmt);
}
pDMLPackage->setTableOid (ci.tableOid);
if (!ci.singleInsert)
{
pDMLPackage->set_isBatchInsert(true);
}
if (!(thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
pDMLPackage->set_isAutocommitOn(true);
if (useHdfs)
pDMLPackage->set_isAutocommitOn(true);
ByteStream bytestream;
bytestream << static_cast<uint32_t>(sessionID);
pDMLPackage->write(bytestream);
delete pDMLPackage;
ByteStream::byte b = 0;
string errormsg;
ByteStream::octbyte rows;
try
{
ci.dmlProc->write(bytestream);
bytestream = ci.dmlProc->read();
if ( bytestream.length() == 0 )
{
rc = 1;
thd->killed = KILL_QUERY;
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [1]");
}
else
{
bytestream >> b;
bytestream >> rows;
bytestream >> errormsg;
}
}
catch (runtime_error&)
{
rc = 1 ;
thd->killed = KILL_QUERY;
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [2]");
}
catch (...)
{
rc = 1;
thd->killed = KILL_QUERY;
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Caught unknown error");
}
if (( b != 0 ) && (!thd->get_stmt_da()->is_set()))
{
rc = 1;
thd->killed = KILL_QUERY;
thd->raise_error_printf(ER_INTERNAL_ERROR, errormsg.c_str());
}
delete ci.dmlProc;
ci.dmlProc = NULL;
return rc;
}
int doProcessInsertValues ( TABLE* table, uint32_t size, cal_connection_info& ci, bool lastBatch = false )
{
THD* thd = current_thd;
uint32_t sessionID = tid2sid(thd->thread_id);
int rc = 0;
char* query_char = idb_mysql_query_str(thd);
std::string query_str;
if (!query_char)
{
query_str = "<Replication event>";
}
else
{
query_str = query_char;
}
VendorDMLStatement dmlStmts(query_str, DML_INSERT, table->s->table_name.str,
table->s->db.str, size, ci.colNameList.size(), ci.colNameList,
ci.tableValuesMap, ci.nullValuesBitset, sessionID);
CalpontDMLPackage* pDMLPackage = CalpontDMLFactory::makeCalpontDMLPackageFromMysqlBuffer(dmlStmts);
//@Bug 2466 Move the clean up earlier to avoid the second insert in another session to get the data
ci.tableValuesMap.clear();
ci.colNameList.clear();
if (!pDMLPackage)
{
rc = -1;
string emsg("Calpont DML package cannot build. ");
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, emsg.c_str());
return rc;
}
//@Bug 2721 and 2722 log batch insert statement only once in the bebug file.
if (( ( ci.isLoaddataInfile ) || ((ci.rowsHaveInserted + size) < ci.bulkInsertRows ) ) && (ci.rowsHaveInserted > 0))
{
pDMLPackage->set_Logging( false );
pDMLPackage->set_Logending( false );
}
else if (( ( ci.isLoaddataInfile ) || ((ci.rowsHaveInserted + size) < ci.bulkInsertRows ) ) && (ci.rowsHaveInserted == 0))
{
pDMLPackage->set_Logging( true );
pDMLPackage->set_Logending( false );
}
if ( ci.singleInsert )
{
pDMLPackage->set_Logging( true );
pDMLPackage->set_Logending( true );
}
if ( !ci.singleInsert )
{
pDMLPackage->set_isBatchInsert( true );
}
if (thd->is_strict_mode())
{
pDMLPackage->set_isWarnToError( true );
}
pDMLPackage->setTableOid (ci.tableOid);
if (lastBatch)
{
pDMLPackage->set_Logending( true );
}
if (lastBatch && (ci.rowsHaveInserted > 0))
pDMLPackage->set_Logging( false );
std::string name = table->s->table_name.str;
pDMLPackage->set_TableName(name);
name = table->s->db.str;
pDMLPackage->set_SchemaName(name);
pDMLPackage->set_TimeZone(thd->variables.time_zone->get_name()->ptr());
if (thd->lex->sql_command == SQLCOM_INSERT_SELECT)
pDMLPackage->set_isInsertSelect(true);
//Carry session autocommit info in the pkg to use in DMLProc
//cout << "Thread options = " << thd->variables.option_bits << " and OPTION_NOT_AUTOCOMMIT:OPTION_BEGIN = " << OPTION_NOT_AUTOCOMMIT << ":" << OPTION_BEGIN << endl;
if (!(thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
{
//cout << "autocommit is on" << endl;
pDMLPackage->set_isAutocommitOn(true);
}
else if (useHdfs)
{
pDMLPackage->set_isAutocommitOn(true);
}
ByteStream bytestream, bytestreamRcv;
bytestream << sessionID;
pDMLPackage->write(bytestream);
delete pDMLPackage;
ByteStream::byte b = 0;
string errormsg;
ByteStream::octbyte rows;
try
{
ci.dmlProc->write(bytestream);
bytestreamRcv = ci.dmlProc->read();
if ( bytestreamRcv.length() == 0 )
{
//check if it is first batch and DMLProc restarted. Only this case, get a new client and resend
if (ci.rowsHaveInserted == 0)
{
delete ci.dmlProc;
ci.dmlProc = new MessageQueueClient("DMLProc");
//cout << "doProcessInsertValues starts a client " << ci.dmlProc << " for session " << thd->thread_id << endl;
try
{
ci.dmlProc->write(bytestream);
bytestreamRcv = ci.dmlProc->read();
if ( bytestreamRcv.length() == 0 )
{
rc = -1;
b = 1;
errormsg = "Lost connection to DMLProc [3]";
}
else
{
bytestreamRcv >> b;
bytestreamRcv >> rows;
bytestreamRcv >> errormsg;
rc = b;
}
}
catch (runtime_error&)
{
rc = -1;
thd->get_stmt_da()->set_overwrite_status(true);
errormsg = "Lost connection to DMLProc [4]";
b = 1;
}
}
}
else
{
bytestreamRcv >> b;
bytestreamRcv >> rows;
bytestreamRcv >> errormsg;
rc = b;
}
}
catch (std::exception& rex)
{
//check if it is first batch and DMLProc restarted. Only this case, get a new client and resend
if (ci.rowsHaveInserted == 0)
{
delete ci.dmlProc;
ci.dmlProc = new MessageQueueClient("DMLProc");
//cout << "doProcessInsertValues exception starts a client " << ci.dmlProc << " for session " << thd->thread_id << endl;
try
{
ci.dmlProc->write(bytestream);
bytestreamRcv = ci.dmlProc->read();
if ( bytestreamRcv.length() == 0 )
{
rc = -1;
b = 1;
errormsg = string("Lost connection to DMLProc after getting a new client [1:") + rex.what() + "]";
}
else
{
bytestreamRcv >> b;
bytestreamRcv >> rows;
bytestreamRcv >> errormsg;
rc = b;
}
}
catch (std::exception& rrex)
{
rc = -1;
thd->get_stmt_da()->set_overwrite_status(true);
errormsg = string("Lost connection to DMLProc after getting a new client [2:") + rex.what() + " then " + rrex.what() + "]";
b = 1;
}
}
else //really lost connection
{
rc = -1;
thd->get_stmt_da()->set_overwrite_status(true);
errormsg = string("Lost connection to DMLProc really [1:") + rex.what() + "]";
b = 1;
}
}
catch (...)
{
rc = -1;
thd->get_stmt_da()->set_overwrite_status(true);
errormsg = "Unknown error caught";
b = 1;
}
if ((b != 0) && (b != dmlpackageprocessor::DMLPackageProcessor::IDBRANGE_WARNING))
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, errormsg.c_str());
}
if ( b == dmlpackageprocessor::DMLPackageProcessor::IDBRANGE_WARNING )
{
if (!thd->is_strict_mode())
{
rc = 0;
}
push_warning(thd, Sql_condition::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, errormsg.c_str());
}
if ( rc != 0 )
ci.rc = rc;
if ( b == dmlpackageprocessor::DMLPackageProcessor::ACTIVE_TRANSACTION_ERROR )
rc = b;
return rc;
}
}
int ha_mcs_impl_write_last_batch(TABLE* table, cal_connection_info& ci, bool abort)
{
int rc = 0;
THD* thd = current_thd;
std::string command;
uint32_t size = ci.tableValuesMap[0].size();
//@Bug 2468. Add a logging statement command
command = "COMMIT";
std::string schema;
schema = table->s->db.str;
//@Bug 6112. if no row to be insert and no rows have been inserted, no need to send to DMLProc
if ((size == 0) && (ci.rowsHaveInserted == 0))
return rc;
//@Bug 2715 Check the saved error code.
//@Bug 4516 always send the last package to allow DMLProc receive all messages from WES
if (( ci.rc != 0 ) || abort )
{
if (abort) //@Bug 5285. abort is different from error, dmlproc only clean up when erroring out
rc = doProcessInsertValues( table, size, ci, true);
//@Bug 2722 Log the statement into datamod log
//@Bug 4605 if error, rollback and no need to check whether the session is autocommit off
command = "ROLLBACK";
rc = ProcessCommandStatement ( thd, command, ci, schema );
rc = ci.rc;
ci.rc = 0;
if (size > 0 )
{
ci.tableValuesMap.clear();
ci.colNameList.clear();
}
return rc;
}
else
{
rc = doProcessInsertValues( table, size, ci, true);
}
if ( abort )
{
rc = 1;
thd->get_stmt_da()->set_overwrite_status(true);
std::string errormsg = "statement is aborted.";
thd->raise_error_printf(ER_INTERNAL_ERROR, errormsg.c_str());
}
if ( rc == dmlpackageprocessor::DMLPackageProcessor::ACTIVE_TRANSACTION_ERROR )
return rc;
//@Bug 4605
int rc1 = 0;
if ( (rc == 0) && !abort && (!(thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))))
{
ci.rowsHaveInserted += size;
command = "COMMIT";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
else if (useHdfs)
{
ci.rowsHaveInserted += size;
command = "COMMIT";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
else if (( rc != 0) || abort )
{
command = "ROLLBACK";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
rc = max(rc, rc1);
return rc;
}
int ha_mcs_impl_write_row_(const uchar* buf, TABLE* table, cal_connection_info& ci, ha_rows& rowsInserted)
{
int rc = 0;
//timer.start( "buildValueList");
ci.colNameList.clear();
THD* thd = current_thd;
uint32_t size = 0;
std::string schema;
schema = table->s->db.str;
//@Bug 2086 Added syntax check for '\0'
try
{
size = buildValueList ( table, ci );
}
catch (runtime_error& rex)
{
rc = 1;
ci.rc = rc; //@Bug 2790 Save the error infomation.
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, rex.what());
return rc;
}
if (fBatchInsertGroupRows == 0)
{
fBatchInsertGroupRows = ResourceManager::instance()->getRowsPerBatch();
}
//timer.stop( "buildValueList");
if ( ci.singleInsert // Single insert
|| (( ci.bulkInsertRows > 0 ) && (( ( ci.rowsHaveInserted + size) >= ci.bulkInsertRows )
|| ( (!ci.isCacheInsert && size >= fBatchInsertGroupRows) || (ci.isCacheInsert && size >= BATCH_INSERT_GROUP_ROWS_FOR_CACHE) )) )
//Insert with mutilple value case: processed batch by batch. Last batch is sent also.
|| (( ci.bulkInsertRows == 0 ) && ( (!ci.isCacheInsert && size >= fBatchInsertGroupRows)
|| (ci.isCacheInsert && size >= BATCH_INSERT_GROUP_ROWS_FOR_CACHE) ) ) ) // Load data in file is processed batch by batch
{
//timer.start( "DMLProc takes");
//cout <<" sending a batch to DMLProc ... The size is " << size << " the current bulkInsertRows = " << ci.bulkInsertRows << endl;
//Build dmlpackage
if (( ci.bulkInsertRows > 0 ) && ( ( ci.rowsHaveInserted + size) >= ci.bulkInsertRows ))
{
rc = doProcessInsertValues( table, size, ci, true );
}
else
{
rc = doProcessInsertValues( table, size, ci );
}
if ( rc == 0 )
rowsInserted = size;
else
ci.rc = rc;
//@Bug 2481. The current active transaction needs to be released if autocommit is on
//@Bug 2438 Added a check for batchinsert's last batch to send commit if autocommit is on
std::string command;
if ( ci.singleInsert || ( (ci.bulkInsertRows > 0 ) && (( ci.rowsHaveInserted + size) >= ci.bulkInsertRows ) ) )
{
if ( thd->killed > 0 )
{
command = "ROLLBACK";
rc = ProcessCommandStatement ( thd, command, ci, schema );
}
else if (rc != dmlpackageprocessor::DMLPackageProcessor::ACTIVE_TRANSACTION_ERROR)
{
//@Bug 4605
int rc1 = 0;
if ( rc != 0 )
{
command = "ROLLBACK";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
else if (( rc == 0 ) && (!(thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))))
{
command = "COMMIT";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
else if (useHdfs)
{
command = "COMMIT";
rc1 = ProcessCommandStatement ( thd, command, ci, schema );
}
rc = max(rc, rc1);
}
}
//timer.stop( "DMLProc takes");
//timer.finish();
return rc;
}
else
{
return rc;
}
}
int ha_mcs_impl_write_batch_row_(const uchar* buf, TABLE* table, cal_impl_if::cal_connection_info& ci)
{
ByteStream rowData;
int rc = 0;
//std::ostringstream data;
bool nullVal = false;
const uchar* bufHdr = buf; // bit flag indicating a field is null. Only those fields that are nullable are represented.
int32_t headerByte = 0; // Current byte in the bufHdr
int32_t headerBit = 0; // current bit in the bufHdr current byte.
uint16_t colpos = 0;
buf = buf + ci.headerLength; // Number of bytes used for null bits.
//@Bug 6122 if all columns have not null constraint, there is no information in the header
char nullBits = *bufHdr++;
if (!ci.useXbit)
{
// Skip the first bit. For some reason, mysql reserves the first bit of the first byte, unless there's a varchar column in the table.
nullBits = nullBits >> 1;
++headerBit;
}
while (colpos < ci.columnTypes.size()) //test bitmap for null values
{
uint8_t numLoop = 7;
if ((ci.useXbit) || (colpos > 6))
numLoop++;
for (uint8_t i = 0; i < numLoop; i++)
{
if (colpos == ci.columnTypes.size())
break;
//if a column has not null constraint, it will not be in the bit map
if (ci.columnTypes[colpos].constraintType != CalpontSystemCatalog::NOTNULL_CONSTRAINT)
{
if (ci.headerLength > 0 && headerByte >= ci.headerLength)
{
// We've used more null bits than allowed. Something is seriously wrong.
std::string errormsg = "Null bit header is wrong size";
setError(current_thd, ER_INTERNAL_ERROR, errormsg);
return -1;
}
nullVal = nullBits & 0x01;
nullBits = nullBits >> 1;
++headerBit;
if (headerBit == 8)
{
nullBits = *bufHdr++;
headerBit = 0;
++headerByte;
}
}
else
{
nullVal = false;
}
const CalpontSystemCatalog::ColType &colType= ci.columnTypes[colpos];
const datatypes::TypeHandler *h= colType.typeHandler();
if (h) // QQ: error reporting
{
datatypes::ColBatchWriter writer(ci.filePtr,
ci.delimiter,
ci.enclosed_by);
Field* fieldPtr= table->field[colpos];
uint32_t mbmaxlen = (fieldPtr->charset() && fieldPtr->charset()->mbmaxlen)
? fieldPtr->charset()->mbmaxlen : 0;
datatypes::WriteBatchFieldMariaDB field(fieldPtr,
colType,
mbmaxlen);
idbassert(table == table->field[colpos]->table);
buf+= h->ColWriteBatch(&field, buf, nullVal, writer);
}
colpos++;
}
}
rc = fprintf(ci.filePtr, "\n"); //@bug 6077 check whether thhe pipe is still open
if ( rc < 0)
rc = -1;
else
rc = 0;
return rc;
}
std::string ha_mcs_impl_viewtablelock( cal_impl_if::cal_connection_info& ci, execplan::CalpontSystemCatalog::TableName& tablename)
{
THD* thd = current_thd;
ulong sessionID = tid2sid(thd->thread_id);
CalpontDMLPackage* pDMLPackage;
std::string dmlStatement( "VIEWTABLELOCK" );
VendorDMLStatement cmdStmt(dmlStatement, DML_COMMAND, sessionID);
pDMLPackage = CalpontDMLFactory::makeCalpontDMLPackageFromMysqlBuffer(cmdStmt);
if (lower_case_table_names)
{
boost::algorithm::to_lower(tablename.schema);
boost::algorithm::to_lower(tablename.table);
}
pDMLPackage->set_SchemaName (tablename.schema);
pDMLPackage->set_TableName (tablename.table);
ByteStream bytestream;
bytestream << static_cast<uint32_t>(sessionID);
pDMLPackage->write(bytestream);
delete pDMLPackage;
ByteStream::byte b = 0;
ByteStream::octbyte rows;
std::string errorMsg;
std::string tableLockInfo;
//int dmlRowCount = 0;
try
{
ci.dmlProc->write(bytestream);
bytestream = ci.dmlProc->read();
if ( bytestream.length() == 0 )
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [5]");
}
else
{
bytestream >> b;
bytestream >> rows;
bytestream >> errorMsg;
bytestream >> tableLockInfo;
}
}
catch (runtime_error&)
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [6]");
}
catch (...)
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Caught unknown error");
}
if ( b != 0 )
tableLockInfo = errorMsg;
return tableLockInfo;
}
//------------------------------------------------------------------------------
// Clear the table lock associated with the specified table lock id.
// Any bulk rollback that is pending will be applied before the table
// lock is released.
//------------------------------------------------------------------------------
std::string ha_mcs_impl_cleartablelock(
cal_impl_if::cal_connection_info& ci,
uint64_t tableLockID)
{
execplan::CalpontSystemCatalog::TableName tblName;
THD* thd = current_thd;
ulong sessionID = tid2sid(thd->thread_id);
std::string tableLockInfo;
BRM::TableLockInfo lockInfo;
// Perform preliminary setup. CalpontDMLPackage expects schema and table
// name to be provided, so we get the table OID for the specified table
// lock, and then get the table name for the applicable table OID.
std::string prelimTask;
try
{
BRM::DBRM brm;
prelimTask = "getting table locks from BRM.";
bool getLockInfo = brm.getTableLockInfo(tableLockID, &lockInfo);
if (!getLockInfo)
{
tableLockInfo = "No table lock found for specified table lock ID";
return tableLockInfo;
}
boost::shared_ptr<execplan::CalpontSystemCatalog> csc =
execplan::CalpontSystemCatalog::makeCalpontSystemCatalog(sessionID);
csc->identity(execplan::CalpontSystemCatalog::FE);
prelimTask = "getting table name from system catalog.";
tblName = csc->tableName( lockInfo.tableOID );
}
catch (std::exception& ex)
{
std::string eMsg(ex.what());
eMsg += " Error ";
eMsg += prelimTask;
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, eMsg.c_str());
return tableLockInfo;
}
catch (...)
{
std::string eMsg(" Error ");
eMsg += prelimTask;
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, eMsg.c_str());
return tableLockInfo;
}
std::string dmlStatement( "CLEARTABLELOCK" );
VendorDMLStatement cmdStmt(dmlStatement, DML_COMMAND, sessionID);
CalpontDMLPackage* pDMLPackage =
CalpontDMLFactory::makeCalpontDMLPackageFromMysqlBuffer( cmdStmt );
pDMLPackage->set_SchemaName(tblName.schema);
pDMLPackage->set_TableName (tblName.table );
// Table lock ID is passed in the SQL statement attribute
std::ostringstream lockIDString;
lockIDString << tableLockID;
pDMLPackage->set_SQLStatement( lockIDString.str() );
ByteStream bytestream;
bytestream << static_cast<uint32_t>(sessionID);
pDMLPackage->write(bytestream);
delete pDMLPackage;
ByteStream::byte b = 0;
ByteStream::octbyte rows;
std::string errorMsg;
try
{
ci.dmlProc->write(bytestream);
bytestream = ci.dmlProc->read();
if ( bytestream.length() == 0 )
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [7]");
}
else
{
bytestream >> b;
bytestream >> rows;
bytestream >> errorMsg;
bytestream >> tableLockInfo;
}
}
catch (runtime_error&)
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Lost connection to DMLProc [8]");
}
catch (...)
{
thd->get_stmt_da()->set_overwrite_status(true);
thd->raise_error_printf(ER_INTERNAL_ERROR, "Caught unknown error");
}
//@Bug 2606. Send error message back to sql session
if ( b != 0 )
tableLockInfo = errorMsg;
return tableLockInfo;
}
int ha_mcs_impl_commit_ (handlerton* hton, THD* thd, bool all, cal_connection_info& ci )
{
int rc = 0;
if (thd->slave_thread && !get_replication_slave(thd))
return 0;
std::string command("COMMIT");
#ifdef INFINIDB_DEBUG
cout << "COMMIT" << endl;
#endif
rc = ProcessCommandStatement(thd, command, ci);
return rc;
}
int ha_mcs_impl_rollback_ (handlerton* hton, THD* thd, bool all, cal_connection_info& ci)
{
int rc = 0;
#ifdef INFINIDB_DEBUG
cout << "ROLLBACK" << endl;
#endif
if (useHdfs)
{
string msg = string("Some non-transactional changed tables couldn't be rolled back");
// cout << "Some non-transactional changed tables couldn't be rolled back" << endl;
push_warning(thd, Sql_condition::WARN_LEVEL_WARN, 1196, msg.c_str());
return rc;
}
std::string command("ROLLBACK");
rc = ProcessCommandStatement(thd, command, ci);
return rc;
}
int ha_mcs_impl_close_connection_ (handlerton* hton, THD* thd, cal_connection_info& ci )
{
int rc = 0;
#ifdef INFINIDB_DEBUG
cout << "Close connection session ID " << thd->thread_id << endl;
#endif
if ( !ci.dmlProc )
{
return rc;
}
std::string command("CLEANUP");
rc = ProcessCommandStatement(thd, command, ci);
// @bug 1622. remove calpontsystemcatalog and close the socket when session quit.
// @info when Calpont process a select query, an alter table phase is involved in
// the vtable design, which will auto start a transaction. when autocommit on (by default), rollback is automically called
// when session quit. rollback can also be called by user explicitly to rollback
// a transaction. Under either situation, system catalog cache for this session should
// be removed
return rc;
}
// vim:ts=4 sw=4:
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