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// sharding_balance3.js
// simple test to make sure things get balanced
s = new ShardingTest( "slow_sharding_balance3" , 2 , 3 , 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 < ( 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 diff1(){
var x = s.chunkCounts( "foo" );
printjson( x )
return Math.max( x.shard0000 , x.shard0001 ) - Math.min( x.shard0000 , x.shard0001 );
}
assert.lt( 10 , diff1() );
// Wait for balancer to kick in.
var initialDiff = diff1();
var maxRetries = 3;
while ( diff1() == initialDiff ){
sleep( 5000 );
assert.lt( 0, maxRetries--, "Balancer did not kick in.");
}
print("* A");
print( "disabling the balancer" );
s.config.settings.update( { _id : "balancer" }, { $set : { stopped : true } } , true );
s.config.settings.find().forEach( printjson );
print("* B");
print( diff1() )
var currDiff = diff1();
assert.repeat( function(){
var d = diff1();
return d != currDiff;
} , "balance with stopped flag should not have happened" , 1000 * 60 , 5000 );
s.stop()
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