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// Test that a rollback of collModding usePowerOf2Sizes and validator can be rolled back.
//
// If all data-bearing nodes in a replica set are using an ephemeral storage engine, the set will
// not be able to survive a scenario where all data-bearing nodes are down simultaneously. In such a
// scenario, none of the members will have any data, and upon restart will each look for a member to
// inital sync from, so no primary will be elected. This test induces such a scenario, so cannot be
// run on ephemeral storage engines.
// @tags: [requires_persistence]
(function() {
"use strict";
function getOptions(conn) {
return conn.getDB(name).foo.exists().options;
}
// Set up a set and grab things for later.
var name = "rollback_collMod_PowerOf2Sizes";
var replTest = new ReplSetTest({name: name, nodes: 3});
var nodes = replTest.nodeList();
var conns = replTest.startSet();
replTest.initiate({
"_id": name,
"members": [
{"_id": 0, "host": nodes[0]},
{"_id": 1, "host": nodes[1]},
{"_id": 2, "host": nodes[2], arbiterOnly: true}
]
});
// Get master and do an initial write.
var master = replTest.getPrimary();
var a_conn = master;
var slaves = replTest.liveNodes.slaves;
var b_conn = slaves[0];
var AID = replTest.getNodeId(a_conn);
var BID = replTest.getNodeId(b_conn);
// Create collection with custom options.
var originalCollectionOptions = {
flags: 0,
validator: {x: {$exists: 1}},
validationLevel: "moderate",
validationAction: "warn"
};
assert.commandWorked(a_conn.getDB(name).createCollection('foo', originalCollectionOptions));
var options = {writeConcern: {w: 2, wtimeout: 60000}, upsert: true};
assert.writeOK(a_conn.getDB(name).foo.insert({x: 1}, options));
assert.eq(getOptions(a_conn), originalCollectionOptions);
assert.eq(getOptions(b_conn), originalCollectionOptions);
// Stop the slave so it never sees the collMod.
replTest.stop(BID);
// Run the collMod only on A.
assert.commandWorked(a_conn.getDB(name).runCommand({
collMod: "foo",
usePowerOf2Sizes: false,
noPadding: true,
validator: {a: 1},
validationLevel: "moderate",
validationAction: "warn"
}));
assert.eq(getOptions(a_conn),
{flags: 2, validator: {a: 1}, validationLevel: "moderate", validationAction: "warn"});
// Shut down A and fail over to B.
replTest.stop(AID);
replTest.restart(BID);
master = replTest.getPrimary();
assert.eq(b_conn.host, master.host, "b_conn assumed to be master");
b_conn = master;
// Do a write on B so that A will have to roll back.
options = {writeConcern: {w: 1, wtimeout: 60000}, upsert: true};
assert.writeOK(b_conn.getDB(name).foo.insert({x: 2}, options));
// Restart A, which should rollback the collMod before becoming primary.
replTest.restart(AID);
try {
b_conn.adminCommand({replSetStepDown: 60, secondaryCatchUpPeriodSecs: 60});
} catch (e) {
// Ignore network disconnect.
}
replTest.waitForState(a_conn, ReplSetTest.State.PRIMARY);
assert.eq(getOptions(a_conn), originalCollectionOptions);
}());
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