mongo/jstests/replsets/buildindexes_false_with_system_indexes.js

/*
 * Tests that hidden nodes with buildIndexes: false behave correctly when system tables with
 * default indexes are created.
 *
 * @tags: [requires_persistence]
 */
import {ReplSetTest} from "jstests/libs/replsettest.js";

const testName = "buildindexes_false_with_system_indexes";

let rst = new ReplSetTest({
    name: testName,
    nodes: [{}, {rsConfig: {priority: 0}}, {rsConfig: {priority: 0, hidden: true, buildIndexes: false}}],
});
const nodes = rst.startSet();
rst.initiate(null, null, {initiateWithDefaultElectionTimeout: true});

let primary = rst.getPrimary();
assert.eq(primary, nodes[0]);
let secondary = nodes[1];
const hidden = nodes[2];

rst.awaitReplication();
jsTestLog("Creating a role in the admin database");
let adminDb = primary.getDB("admin");
adminDb.createRole({role: "test_role", roles: [{role: "readWrite", db: "test"}], privileges: []});
rst.awaitReplication();

jsTestLog("Creating a user in the admin database");
adminDb.createUser({user: "test_user", pwd: "test", roles: [{role: "test_role", db: "admin"}]});
rst.awaitReplication();

// Make sure the indexes we expect are present on all nodes.  The buildIndexes: false node
// should have only the _id_ index.
let secondaryAdminDb = secondary.getDB("admin");
const hiddenAdminDb = hidden.getDB("admin");

assert.eq(
    ["_id_", "user_1_db_1"],
    adminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "role_1_db_1"],
    adminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "user_1_db_1"],
    secondaryAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "role_1_db_1"],
    secondaryAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);

// Drop the indexes and restart the secondary.  The indexes should not be re-created.
jsTestLog("Dropping system indexes and restarting secondary.");
adminDb.system.users.dropIndex("user_1_db_1");
adminDb.system.roles.dropIndex("role_1_db_1");
rst.awaitReplication();
assert.eq(
    ["_id_"],
    adminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    adminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    secondaryAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    secondaryAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);

secondary = rst.restart(secondary, {}, true /* wait for node to become healthy */);
rst.awaitSecondaryNodes();
secondaryAdminDb = secondary.getDB("admin");
assert.eq(
    ["_id_"],
    secondaryAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    secondaryAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);

jsTestLog("Now restarting primary; indexes should be created.");
rst.restart(primary);
primary = rst.getPrimary();
rst.awaitReplication();
rst.awaitReplication();
rst.awaitReplication();
adminDb = primary.getDB("admin");
assert.eq(
    ["_id_", "user_1_db_1"],
    adminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "role_1_db_1"],
    adminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "user_1_db_1"],
    secondaryAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_", "role_1_db_1"],
    secondaryAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.users
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);
assert.eq(
    ["_id_"],
    hiddenAdminDb.system.roles
        .getIndexes()
        .map((x) => x.name)
        .sort(),
);

rst.stopSet();