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// from server 2326 - make sure that sharding only works with unique indices
s = new ShardingTest( "shard_index", 2, 0, 1 )
// Regenerate fully because of SERVER-2782
for ( var i = 0; i < 19; i++ ) {
var coll = s.admin._mongo.getDB( "test" ).getCollection( "foo" + i )
coll.drop()
for ( var j = 0; j < 300; j++ ) {
coll.insert( { num : j, x : 1 } )
}
assert.eq( null, coll.getDB().getLastError() );
if(i == 0) s.adminCommand( { enablesharding : "" + coll._db } );
print("\n\n\n\n\nTest # " + i)
if ( i == 0 ) {
// Unique index exists, but not the right one.
coll.ensureIndex( { num : 1 }, { unique : true } )
coll.ensureIndex( { x : 1 } )
passed = false
try {
s.adminCommand( { shardcollection : "" + coll, key : { x : 1 } } )
passed = true
} catch (e) {
print( e )
}
assert( !passed, "Should not shard collection when another unique index exists!")
}
if ( i == 1 ) {
// Unique index exists as prefix, also index exists
coll.ensureIndex( { x : 1 } )
coll.ensureIndex( { x : 1, num : 1 }, { unique : true } )
try{
s.adminCommand({ shardcollection : "" + coll, key : { x : 1 } })
}
catch(e){
print(e)
assert( false, "Should be able to shard non-unique index without unique option.")
}
}
if ( i == 2 ) {
// Non-unique index exists as prefix, also index exists. No unique index.
coll.ensureIndex( { x : 1 } )
coll.ensureIndex( { x : 1, num : 1 } )
passed = false;
try{
s.adminCommand({ shardcollection : "" + coll, key : { x : 1 } })
passed = true;
}
catch( e ){
print(e)
assert( !passed, "Should be able to shard collection with no unique index if unique not specified.")
}
}
if ( i == 3 ) {
// Unique index exists as prefix, also unique index exists
coll.ensureIndex( { num : 1 }, { unique : true })
coll.ensureIndex( { num : 1 , x : 1 }, { unique : true } )
try{
s.adminCommand({ shardcollection : "" + coll, key : { num : 1 }, unique : true })
}
catch( e ){
print(e)
assert( false, "Should be able to shard collection with unique prefix index.")
}
}
if ( i == 4 ) {
// Unique index exists as id, also unique prefix index exists
coll.ensureIndex( { _id : 1, num : 1 }, { unique : true } )
try{
s.adminCommand({ shardcollection : "" + coll, key : { _id : 1 }, unique : true })
}
catch( e ){
print(e)
assert( false, "Should be able to shard collection with unique id index.")
}
}
if ( i == 5 ) {
// Unique index exists as id, also unique prefix index exists
coll.ensureIndex( { _id : 1, num : 1 }, { unique : true } )
try{
s.adminCommand({ shardcollection : "" + coll, key : { _id : 1, num : 1 }, unique : true })
}
catch( e ){
print(e)
assert( false, "Should be able to shard collection with unique combination id index.")
}
}
if ( i == 6 ) {
coll.remove({})
// Unique index does not exist, also unique prefix index exists
coll.ensureIndex( { num : 1, _id : 1 }, { unique : true } )
try{
s.adminCommand({ shardcollection : "" + coll, key : { num : 1 }, unique : true })
}
catch( e ){
print(e)
assert( false, "Should be able to shard collection with no unique index but with a unique prefix index.")
}
printjson( coll.getIndexes() )
// Make sure the index created is unique!
assert.eq( 1, coll.getDB().getCollection( "system.indexes" ).find( { ns : "" + coll, key : { num : 1 }, unique : true } ).itcount() )
}
if ( i == 7 ) {
coll.remove({})
// No index exists
try{
assert.eq( coll.find().itcount(), 0 )
s.adminCommand({ shardcollection : "" + coll, key : { num : 1 } })
}
catch( e ){
print(e)
assert( false, "Should be able to shard collection with no index on shard key.")
}
}
if ( i == 8 ) {
coll.remove({})
// No index exists
passed = false
try{
assert.eq( coll.find().itcount(), 0 )
s.adminCommand({ shardcollection : "" + coll, key : { num : 1 }, unique : true })
passed = true
}
catch( e ){
print(e)
}
assert( passed, "Should be able to shard collection with unique flag but with no unique index on shard key, if coll empty.")
printjson( coll.getIndexes() )
// Make sure the index created is unique!
assert.eq( 1, coll.getDB().getCollection( "system.indexes" ).find( { ns : "" + coll, key : { num : 1 }, unique : true } ).itcount() )
}
if ( i == 9 ) {
// Unique index exists on a different field as well
coll.ensureIndex( { num : 1 }, { unique : true } )
coll.ensureIndex( { x : 1 } )
passed = false
try {
s.adminCommand( { shardcollection : "" + coll, key : { x : 1 } } )
passed = true
} catch (e) {
print( e )
}
assert( !passed, "Should not shard collection when another unique index exists!" )
}
if ( i == 10 ){
//try sharding non-empty collection without any index
passed = false;
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( !passed , "Should not be able to shard without index");
//now add containing index and try sharding by prefix
coll.ensureIndex( {num : 1, x : 1} );
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( passed , "Should be able to shard collection with prefix of existing index");
printjson( coll.getIndexes() );
//make sure no extra index is created
assert.eq( 2, coll.getIndexes().length );
}
if ( i == 11 ){
coll.remove({})
//empty collection with useful index. check new index not created
coll.ensureIndex( {num : 1, x : 1} );
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( passed , "Should be able to shard collection with prefix of existing index");
printjson( coll.getIndexes() );
//make sure no extra index is created
assert.eq( 2, coll.getIndexes().length );
}
if ( i == 12 ){
//check multikey values for x make index unusable for shard key
coll.save({num : 100 , x : [2,3] });
coll.ensureIndex( {num : 1, x : 1} );
passed = false;
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( !passed , "Should not be able to shard collection with mulikey index");
}
if ( i == 13 ){
coll.save({ num : [100, 200], x : 10});
coll.ensureIndex( { num : 1, x : 1} );
passed = false;
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( !passed , "Should not be able to shard collection with mulikey index");
}
if ( i == 14 ){
coll.save({ num : 100, x : 10, y : [1,2]});
coll.ensureIndex( { num : 1, x : 1, y : 1} );
passed = false;
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : 1 } } );
passed = true;
}
catch( e ){
print(e);
}
assert( !passed , "Should not be able to shard collection with mulikey index");
}
if ( i == 15 ) {
// try sharding with a hashed index
coll.ensureIndex( { num : "hashed"} );
try{
s.adminCommand( { shardcollection : "" + coll, key : { num : "hashed" } } );
}
catch( e ){
print(e);
assert( false, "Should be able to shard collection with hashed index.");
}
}
if ( i == 16 ) {
// create hashed index, but try to declare it unique when sharding
coll.ensureIndex( { num : "hashed"} )
passed = false;
try{
s.adminCommand({ shardcollection : "" + coll, key : { num : "hashed" }, unique : true});
passed = true;
}
catch( e ){
print(e);
}
assert( !passed , "Should not be able to declare hashed shard key unique.");
}
if ( i == 17 ) {
// create hashed index, but unrelated unique index present
coll.ensureIndex( { x : "hashed" } );
coll.ensureIndex( { num : 1 }, { unique : true} );
passed = false;
try {
s.adminCommand( { shardcollection : "" + coll, key : { x : "hashed" } } );
passed = true;
}
catch (e) {
print( e );
}
assert( !passed, "Should not be able to shard on hashed index with another unique index" );
}
if ( i == 18 ) {
// create hashed index, and a regular unique index exists on same field
coll.ensureIndex( { num : "hashed" } );
coll.ensureIndex( { num : 1 }, { unique : true } );
try{
s.adminCommand({ shardcollection : "" + coll, key : { num : "hashed" } } );
}
catch( e ){
print(e);
assert( false, "Should be able to shard coll with hashed and regular unique index");
}
}
}
s.stop();
|
