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// sharding_balance1.js
s = new ShardingTest( "sharding_balance_randomorder1" , 2 , 2 , 1 , { chunksize : 1 } )
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 < ( 20 * 1024 * 1024 ) ){
db.foo.insert( { _id : Math.random() , 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 );
}
function sum(){
var x = s.chunkCounts( "foo" );
return x.shard0000 + x.shard0001;
}
assert.lt( 20 , diff() , "big differential here" );
print( diff() )
assert.soon( function(){
var d = diff();
return d < 5;
} , "balance didn't happen" , 1000 * 60 * 3 , 5000 );
var chunkCount = sum();
s.adminCommand( { removeshard: "shard0000" } );
assert.soon( function(){
printjson(s.chunkCounts( "foo" ));
s.config.shards.find().forEach(function(z){printjson(z);});
return chunkCount == s.config.chunks.count({shard: "shard0001"});
} , "removeshard didn't happen" , 1000 * 60 * 3 , 5000 );
s.stop();
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