jstests/replsets/drop_collections_two_phase_apply_ops_create.js


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/**
 * Test to ensure that using applyOps to create a collection, using a UUID that belongs to a
 * drop-pending collection, is a no-op. The existing collection remains in a drop-pending state.
 * This is the same behavior as trying to creating a collection with the same name as an existing
 * collection.
 */

(function() {
"use strict";

load("jstests/replsets/libs/two_phase_drops.js");  // For TwoPhaseDropCollectionTest.

// Set up a two phase drop test.
let testName = "drop_collection_two_phase_apply_ops_create";
let dbName = testName;
let collName = "collToDrop";
let twoPhaseDropTest = new TwoPhaseDropCollectionTest(testName, dbName);

// Initialize replica set.
let replTest = twoPhaseDropTest.initReplSet();

// Check for 'system.drop' two phase drop support.
if (!twoPhaseDropTest.supportsDropPendingNamespaces()) {
    jsTestLog('Drop pending namespaces not supported by storage engine. Skipping test.');
    twoPhaseDropTest.stop();
    return;
}

// Create the collection that will be dropped.
twoPhaseDropTest.createCollection(collName);

// PREPARE collection drop.
twoPhaseDropTest.prepareDropCollection(collName);

try {
    // Create collection using applyOps with UUID that belongs to a drop-pending collection.
    const dropPendingColl = twoPhaseDropTest.collectionIsPendingDrop(collName);
    const dropPendingCollName = dropPendingColl.name;
    const primary = replTest.getPrimary();
    const cmdNs = dbName + '.$cmd';
    const dropPendingCollUuid = dropPendingColl.info.uuid;
    const applyOpsCmdWithUuid = {
        applyOps:
            [{op: 'c', ns: cmdNs, ui: dropPendingCollUuid, o: {create: 'ignored_collection_name'}}]
    };
    TwoPhaseDropCollectionTest._testLog(
        'Attempting to create collection using applyOps with UUID: ' + tojson(applyOpsCmdWithUuid));
    assert.commandWorked(primary.adminCommand(applyOpsCmdWithUuid));
    const dropPendingCollInfo = twoPhaseDropTest.collectionIsPendingDrop(collName);
    assert(dropPendingCollInfo,
           'applyOps using UUID ' + dropPendingCollUuid +
               ' changed drop-pending state on collection unexpectedly');
    assert.eq(dropPendingCollUuid.hex(),
              dropPendingCollInfo.info.uuid.hex(),
              'drop pending collection UUID does not match UUID of original collection: ' +
                  tojson(dropPendingCollInfo));

    // COMMIT collection drop.
    twoPhaseDropTest.commitDropCollection(collName);
} finally {
    twoPhaseDropTest.stop();
}
}());