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// sharding_balance2.js
s = new ShardingTest( "slow_sharding_balance2" , 2 , 1 , 1 , { chunksize : 1 , manualAddShard : true } )
names = s.getConnNames();
for ( var i=0; i<names.length; i++ ){
if ( i==1 ) {
// We set maxSize of the shard to something artificially low. That mongod would still
// allocate and mmap storage as usual but the balancing mongos would not ship any chunk
// to it.
s.adminCommand( { addshard : names[i] , maxSize : 1 } );
} else {
s.adminCommand( { addshard : names[i] } );
}
}
s.adminCommand( { enablesharding : "test" } );
s.config.settings.find().forEach( printjson )
db = s.getDB( "test" );
bigString = ""
while ( bigString.length < 10000 )
bigString += "asdasdasdasdadasdasdasdasdasdasdasdasda";
inserted = 0;
num = 0;
while ( inserted < ( 40 * 1024 * 1024 ) ){
db.foo.insert( { _id : num++ , s : bigString } );
inserted += bigString.length;
}
db.getLastError();
s.adminCommand( { shardcollection : "test.foo" , key : { _id : 1 } } );
assert.lt( 20 , s.config.chunks.count() , "setup2" );
function diff(){
var x = s.chunkCounts( "foo" );
printjson( x )
return Math.max( x.shard0000 , x.shard0001 ) - Math.min( x.shard0000 , x.shard0001 );
}
assert.lt( 10 , diff() );
print( diff() )
var currDiff = diff();
assert.repeat( function(){
var d = diff();
return d != currDiff;
} , "balance with maxSize should not have happened" , 1000 * 30 , 5000 );
s.stop();
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