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/**
* The dropIndexes command has to have the same assertions on the primary and secondary nodes.
*
* dropIndexes for applyOps will return 'BackgroundOperationInProgressForNamespace' if there are any
* in-progress index builds. For initial sync, this causes all of the in-progress index builds to be
* aborted. However, during steady state replication, the dropIndexes for applyOps would hang until
* there are no more in-progress index builds. But because the abortIndexBuild/commitIndexBuild
* oplog entries come after the dropIndexes oplog entry, replication will stall indefinitely waiting
* for this condition.
*
* This happens because on the primary, the dropIndexes command would abort in-progress index builds
* and drop any ready indexes even if there are index builds in-progress. To solve this problem, the
* dropIndexes command cannot drop any ready indexes while there are any in-progress index builds.
*
* @tags: [requires_replication]
*/
(function() {
"use strict";
load("jstests/noPassthrough/libs/index_build.js");
const replSet = new ReplSetTest({
nodes: [
{},
{
// Disallow elections on secondary.
rsConfig: {
priority: 0,
},
},
]
});
replSet.startSet();
replSet.initiateWithHighElectionTimeout();
const dbName = "test";
const collName = "drop_indexes_prevents_dropping_ready_indexes_after_aborting";
const primary = replSet.getPrimary();
const secondary = replSet.getSecondary();
const db = primary.getDB(dbName);
const coll = db.getCollection(collName);
for (let i = 0; i < 5; i++) {
assert.commandWorked(coll.insert({a: i, b: i}));
}
jsTestLog("Starting an index build on {a: 1} and hanging on the primary");
IndexBuildTest.pauseIndexBuilds(primary);
let awaitIndexBuild = IndexBuildTest.startIndexBuild(
primary, coll.getFullName(), {a: 1}, {}, [ErrorCodes.IndexBuildAborted]);
IndexBuildTest.waitForIndexBuildToStart(primary.getDB(dbName), coll.getName(), "a_1");
const failPoint = "hangAfterAbortingIndexes";
let res = assert.commandWorked(db.adminCommand({configureFailPoint: failPoint, mode: "alwaysOn"}));
let timesEntered = res.count;
TestData.dbName = dbName;
TestData.collName = collName;
jsTestLog(
"Aborting index build on {a: 1} and hanging dropIndexes while yielding the collection lock");
let awaitDropIndexes = startParallelShell(() => {
assert.commandFailedWithCode(db.getSiblingDB(TestData.dbName)
.runCommand({dropIndexes: TestData.collName, index: ["a_1"]}),
ErrorCodes.BackgroundOperationInProgressForNamespace);
}, primary.port);
awaitIndexBuild();
assert.commandWorked(primary.adminCommand({
waitForFailPoint: failPoint,
timesEntered: timesEntered + 1,
maxTimeMS: kDefaultWaitForFailPointTimeout
}));
jsTestLog("Creating the index {a: 1} to completion");
IndexBuildTest.resumeIndexBuilds(primary);
assert.commandWorked(coll.createIndex({a: 1}));
jsTestLog("Starting an index build on {b: 1} and hanging on the secondary");
IndexBuildTest.pauseIndexBuilds(secondary);
awaitIndexBuild = IndexBuildTest.startIndexBuild(primary, coll.getFullName(), {b: 1}, {}, [], 2);
IndexBuildTest.waitForIndexBuildToStart(secondary.getDB(dbName), coll.getName(), "b_1");
jsTestLog("Resuming the dropIndexes command");
assert.commandWorked(db.adminCommand({configureFailPoint: failPoint, mode: "off"}));
awaitDropIndexes();
jsTestLog("Waiting for dropIndexes to replicate");
replSet.awaitReplication();
jsTestLog("Resuming the index build {b: 1} on the secondary");
IndexBuildTest.resumeIndexBuilds(secondary);
awaitIndexBuild();
replSet.stopSet();
}());
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