void ShardingState::donateChunk( const string& ns , const BSONObj& min , const BSONObj& max , ShardChunkVersion version ) {
scoped_lock lk( _mutex );
ChunkManagersMap::const_iterator it = _chunks.find( ns );
assert( it != _chunks.end() ) ;
ShardChunkManagerPtr p = it->second;
// empty shards should have version 0
version = ( p->getNumChunks() > 1 ) ? version : ShardChunkVersion( 0 , 0 );
ShardChunkManagerPtr cloned( p->cloneMinus( min , max , version ) );
_chunks[ns] = cloned;
}
void ShardingState::donateChunk( const string& ns , const BSONObj& min , const BSONObj& max , ChunkVersion version ) {
scoped_lock lk( _mutex );
ChunkManagersMap::const_iterator it = _chunks.find( ns );
verify( it != _chunks.end() ) ;
ShardChunkManagerPtr p = it->second;
// empty shards should have version 0
version = ( p->getNumChunks() > 1 ) ? version : ChunkVersion( 0 , OID() );
ShardChunkManagerPtr cloned( p->cloneMinus( min , max , version ) );
// TODO: a bit dangerous to have two different zero-version states - no-manager and
// no-version
_chunks[ns] = cloned;
}