void DBClientWithCommands::reIndex( const string& ns ) {
list<BSONObj> all;
auto_ptr<DBClientCursor> i = getIndexes( ns );
while ( i->more() ) {
all.push_back( i->next().getOwned() );
}
dropIndexes( ns );
for ( list<BSONObj>::iterator i=all.begin(); i!=all.end(); i++ ) {
BSONObj o = *i;
insert( Namespace( ns.c_str() ).getSisterNS( "system.indexes" ).c_str() , o );
}
}
Status Database::dropCollection( const StringData& fullns ) {
LOG(1) << "dropCollection: " << fullns << endl;
CollectionTemp* collection = getCollectionTemp( fullns );
if ( !collection ) {
// collection doesn't exist
return Status::OK();
}
_initForWrites();
BackgroundOperation::assertNoBgOpInProgForNs( fullns );
if ( collection->_details->getTotalIndexCount() > 0 ) {
try {
string errmsg;
BSONObjBuilder result;
if ( !dropIndexes( collection->_details, fullns, "*", errmsg, result, true) ) {
warning() << "could not drop collection: " << fullns
<< " because of " << errmsg << endl;
return Status( ErrorCodes::InternalError, errmsg );
}
}
catch( DBException& e ) {
stringstream ss;
ss << "drop: dropIndexes for collection failed - consider trying repair ";
ss << " cause: " << e.what();
warning() << ss.str() << endl;
return Status( ErrorCodes::InternalError, ss.str() );
}
verify( collection->_details->getTotalIndexCount() == 0 );
}
LOG(1) << "\t dropIndexes done" << endl;
ClientCursor::invalidate( fullns );
Top::global.collectionDropped( fullns );
NamespaceDetailsTransient::eraseCollection( fullns.toString() );
dropNS( fullns.toString() );
scoped_lock lk( _collectionLock );
_collections.erase( fullns.toString() );
return Status::OK();
}
bool _compact(const char *ns, NamespaceDetails *d, string& errmsg, bool validate, BSONObjBuilder& result, double pf, int pb) {
//int les = d->lastExtentSize;
// this is a big job, so might as well make things tidy before we start just to be nice.
getDur().commitNow();
list<DiskLoc> extents;
for( DiskLoc L = d->firstExtent; !L.isNull(); L = L.ext()->xnext )
extents.push_back(L);
log() << "compact " << extents.size() << " extents" << endl;
ProgressMeterHolder pm( cc().curop()->setMessage( "compact extent" , extents.size() ) );
// same data, but might perform a little different after compact?
NamespaceDetailsTransient::get(ns).clearQueryCache();
int nidx = d->nIndexes;
scoped_array<IndexSpec> indexSpecs( new IndexSpec[nidx] );
scoped_array<SortPhaseOne> phase1( new SortPhaseOne[nidx] );
{
NamespaceDetails::IndexIterator ii = d->ii();
int x = 0;
while( ii.more() ) {
BSONObjBuilder b;
IndexDetails& idx = ii.next();
BSONObj::iterator i(idx.info.obj());
while( i.more() ) {
BSONElement e = i.next();
if( !str::equals(e.fieldName(), "v") && !str::equals(e.fieldName(), "background") ) {
b.append(e);
}
}
BSONObj o = b.obj().getOwned();
phase1[x].sorter.reset( new BSONObjExternalSorter( idx.idxInterface(), o.getObjectField("key") ) );
phase1[x].sorter->hintNumObjects( d->stats.nrecords );
indexSpecs[x++].reset(o);
}
}
log() << "compact orphan deleted lists" << endl;
for( int i = 0; i < Buckets; i++ ) {
d->deletedList[i].writing().Null();
}
// before dropping indexes, at least make sure we can allocate one extent!
uassert(14025, "compact error no space available to allocate", !allocateSpaceForANewRecord(ns, d, Record::HeaderSize+1, false).isNull());
// note that the drop indexes call also invalidates all clientcursors for the namespace, which is important and wanted here
log() << "compact dropping indexes" << endl;
BSONObjBuilder b;
if( !dropIndexes(d, ns, "*", errmsg, b, true) ) {
errmsg = "compact drop indexes failed";
log() << errmsg << endl;
return false;
}
getDur().commitNow();
long long skipped = 0;
int n = 0;
for( list<DiskLoc>::iterator i = extents.begin(); i != extents.end(); i++ ) {
skipped += compactExtent(ns, d, *i, n++, indexSpecs, phase1, nidx, validate, pf, pb);
pm.hit();
}
if( skipped ) {
result.append("invalidObjects", skipped);
}
assert( d->firstExtent.ext()->xprev.isNull() );
// indexes will do their own progress meter?
pm.finished();
// build indexes
NamespaceString s(ns);
string si = s.db + ".system.indexes";
for( int i = 0; i < nidx; i++ ) {
killCurrentOp.checkForInterrupt(false);
BSONObj info = indexSpecs[i].info;
log() << "compact create index " << info["key"].Obj().toString() << endl;
try {
precalced = &phase1[i];
theDataFileMgr.insert(si.c_str(), info.objdata(), info.objsize());
}
catch(...) {
precalced = 0;
throw;
}
precalced = 0;
}
return true;
}
Status Database::dropCollection( const StringData& fullns ) {
LOG(1) << "dropCollection: " << fullns << endl;
Collection* collection = getCollection( fullns );
if ( !collection ) {
// collection doesn't exist
return Status::OK();
}
_initForWrites();
{
NamespaceString s( fullns );
verify( s.db() == _name );
if( s.isSystem() ) {
if( s.coll() == "system.profile" ) {
if ( _profile != 0 )
return Status( ErrorCodes::IllegalOperation,
"turn off profiling before dropping system.profile collection" );
}
else {
return Status( ErrorCodes::IllegalOperation, "can't drop system ns" );
}
}
}
BackgroundOperation::assertNoBgOpInProgForNs( fullns );
audit::logDropCollection( currentClient.get(), fullns );
if ( collection->_details->getTotalIndexCount() > 0 ) {
try {
string errmsg;
BSONObjBuilder result;
if ( !dropIndexes( collection->_details, fullns, "*", errmsg, result, true) ) {
warning() << "could not drop collection: " << fullns
<< " because of " << errmsg << endl;
return Status( ErrorCodes::InternalError, errmsg );
}
}
catch( DBException& e ) {
stringstream ss;
ss << "drop: dropIndexes for collection failed - consider trying repair ";
ss << " cause: " << e.what();
warning() << ss.str() << endl;
return Status( ErrorCodes::InternalError, ss.str() );
}
verify( collection->_details->getTotalIndexCount() == 0 );
}
LOG(1) << "\t dropIndexes done" << endl;
ClientCursor::invalidate( fullns );
Top::global.collectionDropped( fullns );
Status s = _dropNS( fullns );
_clearCollectionCache( fullns ); // we want to do this always
if ( !s.isOK() )
return s;
DEV {
// check all index collection entries are gone
string nstocheck = fullns.toString() + ".$";
scoped_lock lk( _collectionLock );
for ( CollectionMap::iterator i = _collections.begin();
i != _collections.end();
++i ) {
string temp = i->first;
if ( temp.find( nstocheck ) != 0 )
continue;
log() << "after drop, bad cache entries for: "
<< fullns << " have " << temp;
verify(0);
}
}
return Status::OK();
}
void NamespaceDetails::emptyCappedCollection( const char *ns ) {
DEV verify( this == nsdetails(ns) );
massert( 13424, "collection must be capped", isCapped() );
massert( 13425, "background index build in progress", !_indexBuildsInProgress );
vector<BSONObj> indexes = Helpers::findAll( Namespace( ns ).getSisterNS( "system.indexes" ) , BSON( "ns" << ns ) );
for ( unsigned i=0; i<indexes.size(); i++ ) {
indexes[i] = indexes[i].copy();
}
if ( _nIndexes ) {
string errmsg;
BSONObjBuilder note;
bool res = dropIndexes( this , ns , "*" , errmsg , note , true );
massert( 13426 , str::stream() << "failed during index drop: " << errmsg , res );
}
// Clear all references to this namespace.
ClientCursor::invalidate( ns );
NamespaceDetailsTransient::resetCollection( ns );
// Get a writeable reference to 'this' and reset all pertinent
// attributes.
NamespaceDetails *t = writingWithoutExtra();
t->cappedLastDelRecLastExtent() = DiskLoc();
t->cappedListOfAllDeletedRecords() = DiskLoc();
// preserve firstExtent/lastExtent
t->_capExtent = _firstExtent;
t->_stats.datasize = _stats.nrecords = 0;
// lastExtentSize preserve
// nIndexes preserve 0
// capped preserve true
// max preserve
t->_paddingFactor = 1.0;
t->_systemFlags = 0;
t->_capFirstNewRecord = DiskLoc();
t->_capFirstNewRecord.setInvalid();
t->cappedLastDelRecLastExtent().setInvalid();
// dataFileVersion preserve
// indexFileVersion preserve
t->_multiKeyIndexBits = 0;
t->_reservedA = 0;
t->_extraOffset = 0;
// indexBuildInProgress preserve 0
memset(t->_reserved, 0, sizeof(t->_reserved));
// Reset all existing extents and recreate the deleted list.
for( DiskLoc ext = _firstExtent; !ext.isNull(); ext = ext.ext()->xnext ) {
DiskLoc prev = ext.ext()->xprev;
DiskLoc next = ext.ext()->xnext;
DiskLoc empty = ext.ext()->reuse( ns, true );
ext.ext()->xprev.writing() = prev;
ext.ext()->xnext.writing() = next;
addDeletedRec( empty.drec(), empty );
}
for ( unsigned i=0; i<indexes.size(); i++ ) {
theDataFileMgr.insertWithObjMod(Namespace( ns ).getSisterNS( "system.indexes" ).c_str(),
indexes[i],
false,
true);
}
}
bool _compact(const char *ns, NamespaceDetails *d, string& errmsg, bool validate, BSONObjBuilder& result, double pf, int pb) {
// this is a big job, so might as well make things tidy before we start just to be nice.
getDur().commitIfNeeded();
list<DiskLoc> extents;
for( DiskLoc L = d->firstExtent; !L.isNull(); L = L.ext()->xnext )
extents.push_back(L);
log() << "compact " << extents.size() << " extents" << endl;
ProgressMeterHolder pm( cc().curop()->setMessage( "compact extent" , extents.size() ) );
// same data, but might perform a little different after compact?
NamespaceDetailsTransient::get(ns).clearQueryCache();
int nidx = d->nIndexes;
scoped_array<IndexSpec> indexSpecs( new IndexSpec[nidx] );
scoped_array<SortPhaseOne> phase1( new SortPhaseOne[nidx] );
{
NamespaceDetails::IndexIterator ii = d->ii();
// For each existing index...
for( int idxNo = 0; ii.more(); ++idxNo ) {
// Build a new index spec based on the old index spec.
BSONObjBuilder b;
BSONObj::iterator i(ii.next().info.obj());
while( i.more() ) {
BSONElement e = i.next();
if ( str::equals( e.fieldName(), "v" ) ) {
// Drop any preexisting index version spec. The default index version will
// be used instead for the new index.
continue;
}
if ( str::equals( e.fieldName(), "background" ) ) {
// Create the new index in the foreground.
continue;
}
// Pass the element through to the new index spec.
b.append(e);
}
// Add the new index spec to 'indexSpecs'.
BSONObj o = b.obj().getOwned();
indexSpecs[idxNo].reset(o);
// Create an external sorter.
phase1[idxNo].sorter.reset
( new BSONObjExternalSorter
// Use the default index interface, since the new index will be created
// with the default index version.
( IndexInterface::defaultVersion(),
o.getObjectField("key") ) );
phase1[idxNo].sorter->hintNumObjects( d->stats.nrecords );
}
}
log() << "compact orphan deleted lists" << endl;
for( int i = 0; i < Buckets; i++ ) {
d->deletedList[i].writing().Null();
}
// Start over from scratch with our extent sizing and growth
d->lastExtentSize=0;
// before dropping indexes, at least make sure we can allocate one extent!
uassert(14025, "compact error no space available to allocate", !allocateSpaceForANewRecord(ns, d, Record::HeaderSize+1, false).isNull());
// note that the drop indexes call also invalidates all clientcursors for the namespace, which is important and wanted here
log() << "compact dropping indexes" << endl;
BSONObjBuilder b;
if( !dropIndexes(d, ns, "*", errmsg, b, true) ) {
errmsg = "compact drop indexes failed";
log() << errmsg << endl;
return false;
}
getDur().commitIfNeeded();
long long skipped = 0;
int n = 0;
// reset data size and record counts to 0 for this namespace
// as we're about to tally them up again for each new extent
{
NamespaceDetails::Stats *s = getDur().writing(&d->stats);
s->datasize = 0;
s->nrecords = 0;
}
for( list<DiskLoc>::iterator i = extents.begin(); i != extents.end(); i++ ) {
skipped += compactExtent(ns, d, *i, n++, indexSpecs, phase1, nidx, validate, pf, pb);
pm.hit();
}
if( skipped ) {
result.append("invalidObjects", skipped);
}
verify( d->firstExtent.ext()->xprev.isNull() );
// indexes will do their own progress meter?
pm.finished();
// build indexes
NamespaceString s(ns);
string si = s.db + ".system.indexes";
for( int i = 0; i < nidx; i++ ) {
killCurrentOp.checkForInterrupt(false);
BSONObj info = indexSpecs[i].info;
log() << "compact create index " << info["key"].Obj().toString() << endl;
try {
precalced = &phase1[i];
theDataFileMgr.insert(si.c_str(), info.objdata(), info.objsize());
}
catch(...) {
precalced = 0;
throw;
}
precalced = 0;
}
return true;
}
