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t = db.mr_bigobject
t.drop()
// v8 requires large start string, otherwise UTF16
var large = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
var s = large;
while ( s.length < ( 6 * 1024 * 1024 ) ){
s += large;
}
for ( i=0; i<5; i++ )
t.insert( { _id : i , s : s } )
m = function(){
emit( 1 , this.s + this.s );
}
r = function( k , v ){
return 1;
}
assert.throws( function(){ r = t.mapReduce( m , r , "mr_bigobject_out" ); } , null , "emit should fail" )
m = function(){
emit( 1 , this.s );
}
assert.eq( { 1 : 1 } , t.mapReduce( m , r , "mr_bigobject_out" ).convertToSingleObject() , "A1" )
r = function( k , v ){
total = 0;
for ( var i=0; i<v.length; i++ ){
var x = v[i];
if ( typeof( x ) == "number" )
total += x
else
total += x.length;
}
return total;
}
assert.eq( { 1 : t.count() * s.length } , t.mapReduce( m , r , "mr_bigobject_out" ).convertToSingleObject() , "A1" )
t.drop()
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