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MCOL-267 Add basic engine support

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This patch adds enough support so that cross engines joins with blob
columns in the foreign engines will work. The modifications are as
follows:

* Add CrossEngine support for non-NULL-terminated (binary) data
* Add row data support for blobs (similar to varbinary)
* Add engine support for writing out blob data correctly to the storage
engine API
* Re-enable blob support in the engine plugin
This commit is contained in:
Andrew Hutchings
2017-01-30 17:04:45 +00:00
parent 15e3963e62
commit 27e5995cd3
7 changed files with 56 additions and 21 deletions
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3
dbcon/execplan/calpontsystemcatalog.h
View File

@@ -904,7 +904,8 @@ const CalpontSystemCatalog::TableAliasName make_aliasview(const std::string& s,
*/
inline bool isCharType(const execplan::CalpontSystemCatalog::ColDataType type)
{
return (execplan::CalpontSystemCatalog::VARCHAR == type || execplan::CalpontSystemCatalog::CHAR == type);
return (execplan::CalpontSystemCatalog::VARCHAR == type ||
execplan::CalpontSystemCatalog::CHAR == type);
}
/** convenience function to determine if column type is an

25
dbcon/joblist/crossenginestep.cpp
View File

@@ -231,18 +231,25 @@ void CrossEngineStep::makeMappings()
}
void CrossEngineStep::setField(int i, const char* value, Row& row)
void CrossEngineStep::setField(int i, const char* value, unsigned long length, Row& row)
{
CalpontSystemCatalog::ColDataType colType = row.getColType(i);
if ((colType == CalpontSystemCatalog::CHAR || colType == CalpontSystemCatalog::VARCHAR) &&
row.getColumnWidth(i) > 8)
if (((colType == CalpontSystemCatalog::CHAR || colType == CalpontSystemCatalog::VARCHAR) &&
row.getColumnWidth(i) > 8))
{
if (value != NULL)
row.setStringField(value, i);
else
row.setStringField("", i);
}
else if ((colType == CalpontSystemCatalog::BLOB) || (colType == CalpontSystemCatalog::VARBINARY))
{
if (value != NULL)
row.setVarBinaryField((const uint8_t*)value, length, i);
else
row.setVarBinaryField(NULL, 0, i);
}
else
{
CalpontSystemCatalog::ColType ct;
@@ -484,7 +491,7 @@ void CrossEngineStep::execute()
while ((rowIn = mysql->nextRow()) && !cancelled())
{
for(int i = 0; i < num_fields; i++)
setField(i, rowIn[i], fRowDelivered);
setField(i, rowIn[i], mysql->getFieldLength(i), fRowDelivered);
addRow(rgDataDelivered);
}
@@ -504,7 +511,7 @@ void CrossEngineStep::execute()
for(int i = 0; i < num_fields; i++)
{
if (fFe1Column[i] != -1)
setField(fFe1Column[i], rowIn[i], rowFe1);
setField(fFe1Column[i], rowIn[i], mysql->getFieldLength(i), rowFe1);
}
if (fFeFilters && fFeInstance->evaluate(rowFe1, fFeFilters.get()) == false)
@@ -518,7 +525,7 @@ void CrossEngineStep::execute()
for(int i = 0; i < num_fields; i++)
{
if (fFe1Column[i] == -1)
setField(i, rowIn[i], fRowDelivered);
setField(i, rowIn[i], mysql->getFieldLength(i), fRowDelivered);
}
addRow(rgDataDelivered);
@@ -536,7 +543,7 @@ void CrossEngineStep::execute()
while ((rowIn = mysql->nextRow()) && !cancelled())
{
for(int i = 0; i < num_fields; i++)
setField(i, rowIn[i], rowFe3);
setField(i, rowIn[i], mysql->getFieldLength(i), rowFe3);
fFeInstance->evaluate(rowFe3, fFeSelects);
fFeInstance->evaluate(rowFe3, fFeSelects);
@@ -567,7 +574,7 @@ void CrossEngineStep::execute()
for(int i = 0; i < num_fields; i++)
{
if (fFe1Column[i] != -1)
setField(fFe1Column[i], rowIn[i], rowFe1);
setField(fFe1Column[i], rowIn[i], mysql->getFieldLength(i), rowFe1);
}
if (fFeFilters && fFeInstance->evaluate(rowFe1, fFeFilters.get()) == false)
@@ -581,7 +588,7 @@ void CrossEngineStep::execute()
for(int i = 0; i < num_fields; i++)
{
if (fFe1Column[i] == -1)
setField(i, rowIn[i], rowFe3);
setField(i, rowIn[i], mysql->getFieldLength(i), rowFe3);
}
fFeInstance->evaluate(rowFe3, fFeSelects);

11
dbcon/joblist/crossenginestep.h
View File

@@ -60,13 +60,20 @@ public:
int getFieldCount() { return mysql_num_fields(fRes); }
int getRowCount() { return mysql_num_rows(fRes); }
char** nextRow() { return mysql_fetch_row(fRes); }
char** nextRow()
{
char** row = mysql_fetch_row(fRes);
fieldLengths = mysql_fetch_lengths(fRes);
return row;
}
long getFieldLength(int field) { return fieldLengths[field]; }
const std::string& getError() { return fErrStr; }
private:
MYSQL* fCon;
MYSQL_RES* fRes;
std::string fErrStr;
unsigned long *fieldLengths;
};
/** @brief class CrossEngineStep
@@ -150,7 +157,7 @@ protected:
virtual void makeMappings();
virtual void addFilterStr(const std::vector<const execplan::Filter*>&, const std::string&);
virtual std::string makeQuery();
virtual void setField(int, const char*, rowgroup::Row&);
virtual void setField(int, const char*, unsigned long, rowgroup::Row&);
inline void addRow(rowgroup::RGData &);
//inline void addRow(boost::shared_array<uint8_t>&);
virtual int64_t convertValueNum(

2
dbcon/mysql/ha_calpont_execplan.cpp
View File

@@ -2235,7 +2235,7 @@ CalpontSystemCatalog::ColType colType_MysqlToIDB (const Item* item)
}
if (item->field_type() == MYSQL_TYPE_BLOB)
{
throw runtime_error ("BLOB/TEXT data types are not supported by ColumnStore.");
ct.colDataType = CalpontSystemCatalog::BLOB;
}
}
break;

9
dbcon/mysql/ha_calpont_impl.cpp
View File

@@ -467,6 +467,7 @@ int fetchNextRow(uchar *buf, cal_table_info& ti, cal_connection_info* ci)
case CalpontSystemCatalog::CHAR:
case CalpontSystemCatalog::VARCHAR:
{
// TODO: use getStringPointer instead of getStringField to stop the string copies
Field_varstring* f2 = (Field_varstring*)*f;
switch (colType.colWidth)
{
@@ -622,6 +623,14 @@ int fetchNextRow(uchar *buf, cal_table_info& ti, cal_connection_info* ci)
storeNumericField(f, intColVal, colType);
break;
}
case CalpontSystemCatalog::BLOB:
{
Field_blob *f2 = (Field_blob*)*f;
f2->set_ptr(row.getVarBinaryLength(s), (unsigned char*)row.getVarBinaryField(s));
if ((*f)->null_ptr)
*(*f)->null_ptr &= ~(*f)->null_bit;
break;
}
default: // treat as int64
{
intColVal = row.getUintField<8>(s);

19
utils/rowgroup/rowgroup.cpp
View File

@@ -365,7 +365,8 @@ string Row::toString() const
else
switch (types[i]) {
case CalpontSystemCatalog::CHAR:
case CalpontSystemCatalog::VARCHAR: {
case CalpontSystemCatalog::VARCHAR:
{
const string &tmp = getStringField(i);
os << "(" << getStringLength(i) << ") '" << tmp << "' ";
break;
@@ -381,7 +382,9 @@ string Row::toString() const
case CalpontSystemCatalog::LONGDOUBLE:
os << getLongDoubleField(i) << " ";
break;
case CalpontSystemCatalog::VARBINARY: {
case CalpontSystemCatalog::VARBINARY:
case CalpontSystemCatalog::BLOB:
{
uint32_t len = getVarBinaryLength(i);
const uint8_t* val = getVarBinaryField(i);
os << "0x" << hex;
@@ -429,7 +432,9 @@ string Row::toCSV() const
case CalpontSystemCatalog::LONGDOUBLE:
os << getLongDoubleField(i);
break;
case CalpontSystemCatalog::VARBINARY: {
case CalpontSystemCatalog::VARBINARY:
case CalpontSystemCatalog::BLOB:
{
uint32_t len = getVarBinaryLength(i);
const uint8_t* val = getVarBinaryField(i);
os << "0x" << hex;
@@ -532,6 +537,11 @@ void Row::initToNull()
memset(&data[offsets[i]], 0xFF, getColumnWidth(i));
break;
}
case CalpontSystemCatalog::BLOB: {
// TODO: no NULL value for long double yet, this is a nan.
memset(&data[offsets[i]], 0xFF, getColumnWidth(i));
break;
}
default:
ostringstream os;
os << "Row::initToNull(): got bad column type (" << types[i] <<
@@ -603,6 +613,7 @@ bool Row::isNullValue(uint32_t colIndex) const
}
break;
}
case CalpontSystemCatalog::BLOB:
case CalpontSystemCatalog::VARBINARY: {
uint32_t pos = offsets[colIndex];
if (inStringTable(colIndex)) {
@@ -1100,7 +1111,7 @@ void applyMapping(const int *mapping, const Row &in, Row *out)
//out->setStringField(in.getStringField(i), mapping[i]);
else if (UNLIKELY(in.isShortString(i)))
out->setUintField(in.getUintField(i), mapping[i]);
else if (UNLIKELY(in.getColTypes()[i] == execplan::CalpontSystemCatalog::VARBINARY))
else if (UNLIKELY(in.getColTypes()[i] == execplan::CalpontSystemCatalog::VARBINARY || in.getColTypes()[i] == execplan::CalpontSystemCatalog::BLOB))
out->setVarBinaryField(in.getVarBinaryField(i), in.getVarBinaryLength(i), mapping[i]);
else if (UNLIKELY(in.getColTypes()[i] == execplan::CalpontSystemCatalog::LONGDOUBLE))
out->setLongDoubleField(in.getLongDoubleField(i), mapping[i]);

2
utils/rowgroup/rowgroup.h
View File

@@ -1421,7 +1421,7 @@ inline void copyRow(const Row &in, Row *out, uint32_t colCount)
}
for (uint32_t i = 0; i < colCount; i++) {
if (UNLIKELY(in.getColTypes()[i] == execplan::CalpontSystemCatalog::VARBINARY))
if (UNLIKELY(in.getColTypes()[i] == execplan::CalpontSystemCatalog::VARBINARY || in.getColTypes()[i] == execplan::CalpontSystemCatalog::BLOB))
out->setVarBinaryField(in.getVarBinaryStringField(i), i);
else if (UNLIKELY(in.isLongString(i)))
//out->setStringField(in.getStringField(i), i);