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/**
* Tests that the dropIndexes command can drop ready indexes while there are index builds
* in-progress.
*
* @tags: [requires_replication]
*/
(function() {
"use strict";
load("jstests/noPassthrough/libs/index_build.js");
const rst = ReplSetTest({nodes: 3});
rst.startSet();
rst.initiate();
const primary = rst.getPrimary();
const secondary = rst.getSecondary();
const dbName = "test";
const collName = jsTestName();
const db = primary.getDB(dbName);
const coll = db.getCollection(collName);
const secondaryDB = secondary.getDB(dbName);
const secondaryColl = secondaryDB.getCollection(collName);
assert.commandWorked(db.createCollection(collName));
for (let i = 0; i < 5; i++) {
assert.commandWorked(coll.insert({x: i, y: i}));
}
assert.commandWorked(coll.createIndex({x: 1}, {name: "x_1"}));
IndexBuildTest.pauseIndexBuilds(primary);
IndexBuildTest.pauseIndexBuilds(secondary);
const awaitIndexBuild =
IndexBuildTest.startIndexBuild(db.getMongo(), coll.getFullName(), {y: 1}, {name: "y_1"});
IndexBuildTest.waitForIndexBuildToScanCollection(db, collName, "y_1");
IndexBuildTest.waitForIndexBuildToScanCollection(secondaryDB, collName, "y_1");
IndexBuildTest.assertIndexes(
coll, /*numIndexes=*/ 3, /*readyIndexes=*/["_id_", "x_1"], /*notReadyIndexes=*/["y_1"]);
// However unlikely, a secondary being in the scan collection phase does not guarantee the oplog
// applier considers the 'startIndexBuild' applied, and as such an attempt to listIndexes might
// fail.
IndexBuildTest.assertIndexesSoon(secondaryColl,
/*numIndexes=*/ 3,
/*readyIndexes=*/["_id_", "x_1"],
/*notReadyIndexes=*/["y_1"]);
// Drop the ready index while another index build is in-progress.
assert.commandWorked(coll.dropIndex("x_1"));
rst.awaitReplication();
IndexBuildTest.assertIndexes(
coll, /*numIndexes=*/ 2, /*readyIndexes=*/["_id_"], /*notReadyIndexes=*/["y_1"]);
IndexBuildTest.assertIndexes(
secondaryColl, /*numIndexes=*/ 2, /*readyIndexes=*/["_id_"], /*notReadyIndexes=*/["y_1"]);
IndexBuildTest.resumeIndexBuilds(primary);
IndexBuildTest.resumeIndexBuilds(secondary);
awaitIndexBuild();
rst.awaitReplication();
IndexBuildTest.assertIndexes(
coll, /*numIndexes=*/ 2, /*readyIndexes=*/["_id_", "y_1"], /*notReadyIndexes=*/[]);
IndexBuildTest.assertIndexes(
secondaryColl, /*numIndexes=*/ 2, /*readyIndexes=*/["_id_", "y_1"], /*notReadyIndexes=*/[]);
rst.stopSet();
}());
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