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// SERVER-2326 - make sure that sharding only works with unique indices
(function() {
var s = new ShardingTest({name: "shard_index", shards: 2, mongos: 1});
// Regenerate fully because of SERVER-2782
for (var i = 0; i < 22; i++) {
var coll = s.admin._mongo.getDB("test").getCollection("foo" + i);
coll.drop();
var bulk = coll.initializeUnorderedBulkOp();
for (var j = 0; j < 300; j++) {
bulk.insert({num: j, x: 1});
}
assert.commandWorked(bulk.execute());
if (i == 0) {
s.adminCommand({enablesharding: "" + coll._db});
s.ensurePrimaryShard(coll.getDB().getName(), s.shard1.shardName);
}
print("\n\n\n\n\nTest # " + i);
if (i == 0) {
// Unique index exists, but not the right one.
coll.createIndex({num: 1}, {unique: true});
coll.createIndex({x: 1});
let 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.createIndex({x: 1});
coll.createIndex({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.createIndex({x: 1});
coll.createIndex({x: 1, num: 1});
let 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.createIndex({num: 1}, {unique: true});
coll.createIndex({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.createIndex({_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.createIndex({_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.createIndex({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.getIndexes()
.filter(function(z) {
return friendlyEqual(z.key, {num: 1}) && z.unique;
})
.length);
}
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
let 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.getIndexes()
.filter(function(z) {
return friendlyEqual(z.key, {num: 1}) && z.unique;
})
.length);
}
if (i == 9) {
// Unique index exists on a different field as well
coll.createIndex({num: 1}, {unique: true});
coll.createIndex({x: 1});
let 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
let 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.createIndex({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.createIndex({num: 1, x: 1});
let passed = false;
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.createIndex({num: 1, x: 1});
let 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.createIndex({num: 1, x: 1});
let 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.createIndex({num: 1, x: 1, y: 1});
let 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.createIndex({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.createIndex({num: "hashed"});
let 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.createIndex({x: "hashed"});
coll.createIndex({num: 1}, {unique: true});
let 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.createIndex({num: "hashed"});
coll.createIndex({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");
}
}
if (i == 19) {
// Create sparse index.
coll.createIndex({x: 1}, {sparse: true});
let passed = false;
try {
s.adminCommand({shardcollection: "" + coll, key: {x: 1}});
passed = true;
} catch (e) {
print(e);
}
assert(!passed, "Should not be able to shard coll with sparse index");
}
if (i == 20) {
// Create partial index.
coll.createIndex({x: 1}, {filter: {num: {$gt: 1}}});
let passed = false;
try {
s.adminCommand({shardcollection: "" + coll, key: {x: 1}});
passed = true;
} catch (e) {
print(e);
}
assert(!passed, "Should not be able to shard coll with partial index");
}
if (i == 21) {
// Ensure that a collection with a normal index and a partial index can be sharded,
// where
// both are prefixed by the shard key.
coll.createIndex({x: 1, num: 1}, {filter: {num: {$gt: 1}}});
coll.createIndex({x: 1, num: -1});
try {
s.adminCommand({shardcollection: "" + coll, key: {x: 1}});
} catch (e) {
print(e);
assert(false, "Should be able to shard coll with regular and partial index");
}
}
}
s.stop();
})();
|
