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ndb - bug#25562 use byte-size max_data_length() when setting blob part size

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sql/ha_ndbcluster.cc:
  bug#25562 use byte-size max_data_length() when setting blob part size
This commit is contained in:
unknown 2007-01-23 12:58:10 +01:00
parent ab8355fab0
commit 25fb32ef84
1 changed files with 21 additions and 11 deletions
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18
sql/ha_ndbcluster.cc
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@ -4185,19 +4185,29 @@ static int create_ndb_column(NDBCOL &col,
col.setType(NDBCOL::Text);
col.setCharset(cs);
}
// Use "<=" even if "<" is the exact condition
if (field->max_length() <= (1 << 8))
{
Field_blob *field_blob= (Field_blob *)field;
/*
* max_data_length is 2^8-1, 2^16-1, 2^24-1 for tiny, blob, medium.
* Tinyblob gets no blob parts. The other cases are just a crude
* way to control part size and striping.
*
* In mysql blob(256) is promoted to blob(65535) so it does not
* in fact fit "inline" in NDB.
*/
if (field_blob->max_data_length() < (1 << 8))
goto mysql_type_tiny_blob;
else if (field->max_length() <= (1 << 16))
else if (field_blob->max_data_length() < (1 << 16))
{
col.setInlineSize(256);
col.setPartSize(2000);
col.setStripeSize(16);
}
else if (field->max_length() <= (1 << 24))
else if (field_blob->max_data_length() < (1 << 24))
goto mysql_type_medium_blob;
else
goto mysql_type_long_blob;
}
break;
mysql_type_medium_blob:
case MYSQL_TYPE_MEDIUM_BLOB: