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Code Issues Releases Activity

SERVER-615 more precise extent skipping calculation

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This commit is contained in:
Aaron 2010-03-22 13:57:59 -07:00
parent 97275707db
commit 4912b40106
1 changed files with 3 additions and 4 deletions
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5
db/dbcommands.cpp
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@ -1188,11 +1188,10 @@ namespace mongo {
string toNs = string( realDbName ) + "." + to;
NamespaceDetails *nsd = nsdetails( fromNs.c_str() );
massert( 10301 , "source collection " + fromNs + " does not exist", nsd );
long long excessSize = nsd->datasize - size * 2;
long long excessSize = nsd->datasize - size * 2; // datasize and extentSize can't be compared exactly, so add some padding to 'size'
DiskLoc extent = nsd->firstExtent;
for( ; excessSize > 0 && extent != nsd->lastExtent; extent = extent.ext()->xnext ) {
for( ; excessSize > extent.ext()->length && extent != nsd->lastExtent; extent = extent.ext()->xnext ) {
excessSize -= extent.ext()->length;
if ( excessSize > 0 )
log( 2 ) << "cloneCollectionAsCapped skipping extent of size " << extent.ext()->length << endl;
log( 6 ) << "excessSize: " << excessSize << endl;
}