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/*
* Tests that upgrade/downgrade works correctly even while creating a new collection.
*/
(function() {
"use strict";
load("jstests/libs/feature_compatibility_version.js");
load("jstests/libs/parallel_shell_helpers.js");
const rst = new ReplSetTest({nodes: 2});
rst.startSet();
// Rig the election so that the first node is always primary and that modifying the
// featureCompatibilityVersion document doesn't need to wait for data to replicate.
var replSetConfig = rst.getReplSetConfig();
replSetConfig.members[1].priority = 0;
replSetConfig.members[1].votes = 0;
rst.initiate(replSetConfig);
const primary = rst.getPrimary();
const primaryDB = primary.getDB("test");
for (let versions of [{from: lastStableFCV, to: latestFCV}, {from: latestFCV, to: lastStableFCV}]) {
jsTestLog("Changing FeatureCompatibilityVersion from " + versions.from + " to " + versions.to +
" while creating a collection");
assert.commandWorked(primaryDB.adminCommand({setFeatureCompatibilityVersion: versions.from}));
assert.commandWorked(primaryDB.adminCommand(
{configureFailPoint: "hangBeforeLoggingCreateCollection", mode: "alwaysOn"}));
primaryDB.mycoll.drop();
let awaitCreateCollection;
let awaitUpgradeFCV;
try {
awaitCreateCollection = startParallelShell(function() {
assert.commandWorked(db.runCommand({create: "mycoll"}));
}, primary.port);
assert.soon(function() {
return rawMongoProgramOutput().match("createCollection: test.mycoll");
});
awaitUpgradeFCV = startParallelShell(
funWithArgs(function(version) {
assert.commandWorked(db.adminCommand({setFeatureCompatibilityVersion: version}));
}, versions.to), primary.port);
{
let res;
assert.soon(
function() {
res = assert.commandWorked(
primaryDB.adminCommand({getParameter: 1, featureCompatibilityVersion: 1}));
return res.featureCompatibilityVersion.version === versions.from &&
res.featureCompatibilityVersion.targetVersion === versions.new;
},
function() {
return "targetVersion of featureCompatibilityVersion document wasn't " +
"updated on primary: " + tojson(res);
});
}
} finally {
assert.commandWorked(primaryDB.adminCommand(
{configureFailPoint: "hangBeforeLoggingCreateCollection", mode: "off"}));
}
awaitCreateCollection();
awaitUpgradeFCV();
rst.checkReplicatedDataHashes();
}
rst.stopSet();
})();
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