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//
// Tests that merging chunks via mongos works/doesn't work with different chunk configurations
//
(function() {
'use strict';
var st = new ShardingTest({ shards : 2, mongos : 2 });
var mongos = st.s0;
var staleMongos = st.s1;
var admin = mongos.getDB( "admin" );
var shards = mongos.getCollection( "config.shards" ).find().toArray();
var coll = mongos.getCollection( "foo.bar" );
assert( admin.runCommand({ enableSharding : coll.getDB() + "" }).ok );
printjson( admin.runCommand({ movePrimary : coll.getDB() + "", to : shards[0]._id }) );
assert( admin.runCommand({ shardCollection : coll + "", key : { _id : 1 } }).ok );
// Create ranges MIN->0,0->10,(hole),20->40,40->50,50->90,(hole),100->110,110->MAX on first shard
jsTest.log( "Creating ranges..." );
assert( admin.runCommand({ split : coll + "", middle : { _id : 0 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 10 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 20 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 40 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 50 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 90 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 100 } }).ok );
assert( admin.runCommand({ split : coll + "", middle : { _id : 110 } }).ok );
assert( admin.runCommand({ moveChunk : coll + "", find : { _id : 10 }, to : shards[1]._id }).ok );
assert( admin.runCommand({ moveChunk : coll + "", find : { _id : 90 }, to : shards[1]._id }).ok );
st.printShardingStatus();
// Insert some data into each of the consolidated ranges
assert.writeOK(coll.insert({ _id : 0 }));
assert.writeOK(coll.insert({ _id : 40 }));
assert.writeOK(coll.insert({ _id : 110 }));
var staleCollection = staleMongos.getCollection( coll + "" );
jsTest.log( "Trying merges that should fail..." );
// S0: min->0, 0->10, 20->40, 40->50, 50->90, 100->110, 110->max
// S1: 10->20, 90->100
// Make sure merging non-exact chunks is invalid
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : MinKey }, { _id : 5 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 5 }, { _id : 10 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 15 }, { _id : 50 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 20 }, { _id : 55 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 105 }, { _id : MaxKey }] }).ok );
// Make sure merging single chunks is invalid
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : MinKey }, { _id : 0 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 20 }, { _id : 40 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 110 }, { _id : MaxKey }] }).ok );
// Make sure merging over holes is invalid
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 0 }, { _id : 40 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 40 }, { _id : 110 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 50 }, { _id : 110 }] }).ok );
// Make sure merging between shards is invalid
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 0 }, { _id : 20 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 10 }, { _id : 40 }] }).ok );
assert( !admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 40 }, { _id : 100 }] }).ok );
assert.eq( 3, staleCollection.find().itcount() );
jsTest.log( "Trying merges that should succeed..." );
assert( admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : MinKey }, { _id : 10 }] }).ok );
assert.eq( 3, staleCollection.find().itcount() );
// S0: min->10, 20->40, 40->50, 50->90, 100->110, 110->max
// S1: 10->20, 90->100
// Make sure merging three chunks is valid.
jsTest.log(tojson( admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 20 }, { _id : 90 }] }) ));
// S0: min->10, 20->90, 100->110, 110->max
// S1: 10->20, 90->100
assert.eq( 3, staleCollection.find().itcount() );
assert( admin.runCommand({ mergeChunks : coll + "",
bounds : [{ _id : 100 }, { _id : MaxKey }] }).ok );
assert.eq( 3, staleCollection.find().itcount() );
// S0: min->10, 20->90, 100->max
// S1: 10->20, 90->100
st.printShardingStatus();
st.stop();
})();
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