38e5c4febb
Removes shardGo in lieu of shardColl and removes setBalancer because it duplicates functionality, which is already in sh.
69 lines
2.2 KiB
JavaScript
69 lines
2.2 KiB
JavaScript
(function() {
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var st = new ShardingTest({ name: 'migrateBig_balancer',
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shards: 2,
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other: { enableBalancer: true } });
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var mongos = st.s;
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var admin = mongos.getDB("admin");
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db = mongos.getDB("test");
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var coll = db.getCollection("stuff")
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assert.commandWorked(admin.runCommand({ enablesharding : coll.getDB().getName() }));
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st.ensurePrimaryShard(coll.getDB().getName(), 'shard0001');
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var data = "x"
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var nsq = 16
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var n = 255
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for( var i = 0; i < nsq; i++ ) data += data
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dataObj = {}
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for( var i = 0; i < n; i++ ) dataObj["data-" + i] = data
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var bulk = coll.initializeUnorderedBulkOp();
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for( var i = 0; i < 40; i++ ) {
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bulk.insert({ data: dataObj });
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}
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assert.writeOK(bulk.execute());
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assert.eq( 40 , coll.count() , "prep1" );
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printjson( coll.stats() )
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admin.printShardingStatus()
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admin.runCommand({ shardcollection : "" + coll, key : { _id : 1 } })
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assert.lt( 5 , mongos.getDB( "config" ).chunks.find( { ns : "test.stuff" } ).count() , "not enough chunks" );
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assert.soon(
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function() {
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// On *extremely* slow or variable systems, we've seen migrations fail in the critical section and
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// kill the server. Do an explicit check for this. SERVER-8781
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// TODO: Remove once we can better specify what systems to run what tests on.
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try {
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assert.commandWorked(st.shard0.getDB("admin").runCommand({ ping: 1 }));
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assert.commandWorked(st.shard1.getDB("admin").runCommand({ ping: 1 }));
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}
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catch(e) {
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print("An error occurred contacting a shard during balancing," +
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" this may be due to slow disk I/O, aborting test.");
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throw e;
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}
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res = mongos.getDB( "config" ).chunks.group( { cond : { ns : "test.stuff" } ,
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key : { shard : 1 } ,
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reduce : function( doc , out ){ out.nChunks++; } ,
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initial : { nChunks : 0 } } );
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printjson( res );
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return res.length > 1 && Math.abs( res[0].nChunks - res[1].nChunks ) <= 3;
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} ,
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"never migrated" , 10 * 60 * 1000 , 1000 );
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st.stop();
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})();
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