mongo/jstests/replsets/initial_sync_applier_error.js

/**
 * Initial sync runs in several phases - the first 3 are as follows:
 * 1) fetches the last oplog entry (op_start1) on the source;
 * 2) copies all non-local databases from the source and fetches operations from sync source; and
 * 3) applies operations from the source after op_start1.
 *
 * This test renames a collection on the source between phases 1 and 2, but renameCollection is not
 * supported in initial sync. The secondary will initially fail to apply the command in phase 3
 * and subsequently have to retry the initial sync.
 */

import {configureFailPoint} from "jstests/libs/fail_point_util.js";
import {ReplSetTest} from "jstests/libs/replsettest.js";

let name = "initial_sync_applier_error";
let replSet = new ReplSetTest({
    name: name,
    nodes: [{}, {rsConfig: {arbiterOnly: true}}],
});

replSet.startSet();
replSet.initiate();
let primary = replSet.getPrimary();

let coll = primary.getDB("test").getCollection(name);
assert.commandWorked(coll.insert({_id: 0, content: "hi"}));

// Add a secondary node but make it hang after retrieving the last op on the source
// but before copying databases.
let secondary = replSet.add({setParameter: "numInitialSyncAttempts=2", rsConfig: {votes: 0, priority: 0}});
secondary.setSecondaryOk();

let failPoint = configureFailPoint(secondary, "initialSyncHangBeforeCopyingDatabases");
replSet.reInitiate();

// Wait for fail point message to be logged.
failPoint.wait();

let newCollName = name + "_2";
assert.commandWorked(coll.renameCollection(newCollName, true));
failPoint.off();

checkLog.contains(secondary, "Initial sync done");

replSet.awaitReplication();
replSet.awaitSecondaryNodes();

assert.eq(0, secondary.getDB("test").getCollection(name).count());
assert.eq(1, secondary.getDB("test").getCollection(newCollName).count());
assert.eq("hi", secondary.getDB("test").getCollection(newCollName).findOne({_id: 0}).content);
replSet.stopSet();