database/mariadb-columnstore-engine
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First cut of improving IO behavior for BRM load/save

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This commit is contained in:
Patrick LeBlanc
2019-06-13 16:14:00 -05:00
parent e514fb9b02
commit 603cbc9314
4 changed files with 218 additions and 43 deletions
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13
versioning/BRM/oidserver.cpp
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@ -349,12 +349,17 @@ void OIDServer::initializeBitmap() const
writeData(buf, 0, HeaderSize);
// reset buf to all 0's and write the bitmap
for (i = 0; i < HeaderSize; i++)
buf[i] = 0;
//for (i = 0; i < HeaderSize; i++)
// buf[i] = 0;
for (i = 0; i < bitmapSize; i += HeaderSize)
writeData(buf, HeaderSize + i, (bitmapSize - i > HeaderSize ? HeaderSize : bitmapSize - i));
//for (i = 0; i < bitmapSize; i += HeaderSize)
// writeData(buf, HeaderSize + i, (bitmapSize - i > HeaderSize ? HeaderSize : bitmapSize - i));
uint8_t *bitmapbuf = new uint8_t[bitmapSize];
memset(bitmapbuf, 0, bitmapSize);
writeData(bitmapbuf, HeaderSize, bitmapSize);
delete bitmapbuf;
flipOIDBlock(0, firstOID, 0);
/* append a 16-bit 0 to indicate 0 entries in the vboid->dbroot mapping */