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/**
* Tests that a background index will be successfully
* replicated to a secondary when the indexed collection
* is renamed.
*/
(function() {
"use strict";
// Bring up a 2 node replset.
var name = "bg_index_rename";
var rst = new ReplSetTest({name: name, nodes: 3});
rst.startSet();
rst.initiate();
// Create and populate a collection.
var primary = rst.getPrimary();
var coll = primary.getCollection("test.foo");
var adminDB = primary.getDB("admin");
for (var i = 0; i < 100; i++) {
assert.writeOK(coll.insert({_id: i, x: i * 3, str: "hello world"}));
}
// Add a background index.
coll.ensureIndex({x: 1}, {background: true});
// Rename the collection.
assert.commandWorked(
adminDB.runCommand({renameCollection: "test.foo", to: "bar.test", dropTarget: true}),
"Call to renameCollection failed.");
// Await replication.
rst.awaitReplication();
// Step down the primary.
assert.commandWorked(adminDB.runCommand({replSetStepDown: 60, force: true}));
// Wait for new primary.
var newPrimary = rst.getPrimary();
assert.neq(primary, newPrimary);
var barDB = newPrimary.getDB("bar");
coll = newPrimary.getCollection("bar.test");
coll.insert({_id: 200, x: 600, str: "goodnight moon"});
// Check that the new primary has the index
// on the renamed collection.
var indexes = barDB.runCommand({listIndexes: "test"});
assert.eq(indexes.cursor.firstBatch.length, 2);
rst.stopSet();
}());
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