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/**
* Tests that we can initial sync decimal128 data to secondaries, even when the cluster is in 3.2
* feature compatibility mode.
*/
(function() {
"use strict";
var replTest = new ReplSetTest({name: 'testSet', nodes: 2});
var nodes = replTest.startSet();
replTest.initiate();
var primary = replTest.getPrimary();
var primaryDB = primary.getDB("test");
var primaryColl = primaryDB.initial_sync_decimal;
var secondary = replTest.getSecondary();
// Since we started a fresh replica set, we should be in 3.4 feature compatibility mode.
var fcv = assert.commandWorked(
primaryDB.adminCommand({getParameter: 1, featureCompatibilityVersion: 1}));
assert.eq(fcv.featureCompatibilityVersion, "3.4");
// Make sure we can insert decimal data in 3.4 mode.
assert.writeOK(primaryColl.insert({a: 1, b: NumberDecimal(1)}));
// Set 3.2 feature compatibility mode.
assert.commandWorked(primaryDB.adminCommand({setFeatureCompatibilityVersion: "3.2"}));
fcv = assert.commandWorked(
primaryDB.adminCommand({getParameter: 1, featureCompatibilityVersion: 1}));
assert.eq(fcv.featureCompatibilityVersion, "3.2");
// Ensure 3.2 feature compatibility version has synced to admin.system.version.
fcv = secondary.getDB("admin")
.system.version.find({_id: "featureCompatibilityVersion"})
.toArray();
assert.eq(1, fcv.length);
assert.eq("3.2", fcv[0].version);
// We shouldn't be able to insert decimal data in 3.2 mode.
assert.writeError(primaryColl.insert({a: 1, b: NumberDecimal(1)}));
// We should, however, be able to initial sync decimal data.
assert.commandWorked(secondary.getDB("admin").runCommand({resync: 1}));
replTest.awaitSecondaryNodes();
// Ensure that secondary is still up and has the data.
var secondaryColl = secondary.getDB("test").initial_sync_decimal;
assert.eq(1, secondaryColl.find({b: NumberDecimal(1)}).itcount());
replTest.stopSet();
})();
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