Received null actualCollection when unsplittable collection exists with given uuid

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Major - P3
    • 7.3.0-rc0
    • Affects Version/s: None
    • Component/s: None
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    • Catalog and Routing
    • Fully Compatible
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      const st = new ShardingTest({
    mongos: 1,
    shards: 2,
    rs: \{nodes: 1},
});

const testDB = st.s.getDB(jsTestName());
const shard0 = st.shard0.shardName;
const shard1 = st.shard1.shardName;

assert.commandWorked(st.s.adminCommand(\{enableSharding: testDB.getName(), primaryShard: shard0}));

// create collA with 1 index on the DBPrimary shard
const collA = testDB['collA'];
assert.commandWorked(testDB.runCommand(\{createUnsplittableCollection: 'collA'}));
assert.commandWorked(collA.insert(\{x: 1, y: 2}));
assert.commandWorked(collA.createIndex(\{y: 1}));

const uuidCollA =
    testDB.getSiblingDB('config').collections.findOne(\{_id: collA.getFullName()}).uuid;

// create collB with 1 index not on the DBPrimary shard
const collB = testDB['collB'];
assert.commandWorked(testDB.runCommand(\{createUnsplittableCollection: 'collB', dataShard: shard1}));
assert.commandWorked(collB.insert(\{x: 1, y: 1}));
assert.commandWorked(collB.createIndex(\{y: 1}));

// send dropIndexes with a wrong collectionUUID field
const res = assert.commandFailedWithCode(
    testDB.runCommand(\{dropIndexes: "collB", index: {y: 1}, collectionUUID: uuidCollA}),
    ErrorCodes.CollectionUUIDMismatch);

assert.eq(res.actualCollection, collA.getName());

st.stop();
      Show
      const st = new ShardingTest({     mongos: 1,     shards: 2,     rs: \{nodes: 1}, }); const testDB = st.s.getDB(jsTestName()); const shard0 = st.shard0.shardName; const shard1 = st.shard1.shardName; assert.commandWorked(st.s.adminCommand(\{enableSharding: testDB.getName(), primaryShard: shard0})); // create collA with 1 index on the DBPrimary shard const collA = testDB['collA']; assert.commandWorked(testDB.runCommand(\{createUnsplittableCollection: 'collA'})); assert.commandWorked(collA.insert(\{x: 1, y: 2})); assert.commandWorked(collA.createIndex(\{y: 1})); const uuidCollA =     testDB.getSiblingDB('config').collections.findOne(\{_id: collA.getFullName()}).uuid; // create collB with 1 index not on the DBPrimary shard const collB = testDB['collB']; assert.commandWorked(testDB.runCommand(\{createUnsplittableCollection: 'collB', dataShard: shard1})); assert.commandWorked(collB.insert(\{x: 1, y: 1})); assert.commandWorked(collB.createIndex(\{y: 1})); // send dropIndexes with a wrong collectionUUID field const res = assert.commandFailedWithCode(     testDB.runCommand(\{dropIndexes: "collB", index: {y: 1}, collectionUUID: uuidCollA}),     ErrorCodes.CollectionUUIDMismatch); assert.eq(res.actualCollection, collA.getName()); st.stop();
    • CAR Team 2023-11-27, CAR Team 2023-12-11
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      Given 2 unsplittable collections living on different shards (collA and collB), when a command is sent with the opposite collectionUUID field, the returned actualCollection is null when it's expected to receive the name of the other collection.

       

      For instance:

      • collA has uuidA
      • collB has uuidB

      Command {dropIndexes: "collA", index: {x:1}, collectionUUID: uuidB} will return a null actualCollection field.

       

            Assignee:
            Jordi Olivares Provencio
            Reporter:
            Silvia Surroca
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: