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/**
* Test basic read committed maxTimeMS timeout while waiting for a committed snapshot:
* - Reads with an 'afterOpTime' snapshot >= current time should be able to see things that
* happened before or at that opTime.
* - Reads should time out if there are no snapshots available on secondary.
*/
load("jstests/replsets/rslib.js"); // For reconfig and startSetIfSupportsReadMajority.
(function() {
"use strict";
// Set up a set and grab things for later.
var name = "read_committed_no_snapshots";
var replTest =
new ReplSetTest({name: name, nodes: 3, nodeOptions: {enableMajorityReadConcern: ''}});
if (!startSetIfSupportsReadMajority(replTest)) {
jsTest.log("skipping test since storage engine doesn't support committed reads");
return;
}
var nodes = replTest.nodeList();
var config = {
"_id": name,
"members": [
{"_id": 0, "host": nodes[0]},
{"_id": 1, "host": nodes[1], priority: 0},
{"_id": 2, "host": nodes[2], arbiterOnly: true}
],
"protocolVersion": 1
};
replTest.initiate(config);
// Get connections and collection.
var primary = replTest.getPrimary();
var secondary = replTest.liveNodes.slaves[0];
var secondaryId = replTest.getNodeId(secondary);
var db = primary.getDB(name);
// Do a write, wait for it to replicate, and ensure it is visible.
var res = db.runCommandWithMetadata( //
{
insert: "foo",
documents: [{_id: 1, state: 0}],
writeConcern: {w: "majority", wtimeout: ReplSetTest.kDefaultTimeoutMS}
},
{"$replData": 1});
assert.commandWorked(res.commandReply);
// We need to propagate the lastOpVisible from the primary as afterOpTime in the secondary to
// ensure
// we wait for the write to be in the majority committed view.
var lastOp = res.metadata["$replData"].lastOpVisible;
secondary.setSlaveOk();
// Timeout is based on heartbeat timeout.
assert.commandWorked(secondary.getDB(name).foo.runCommand(
'find',
{"readConcern": {"level": "majority", "afterOpTime": lastOp}, "maxTimeMS": 10 * 1000}));
// Disable snapshotting via failpoint
secondary.adminCommand({configureFailPoint: 'disableSnapshotting', mode: 'alwaysOn'});
// Resync to drop any existing snapshots
secondary.adminCommand({resync: 1});
// Ensure maxTimeMS times out while waiting for this snapshot
assert.commandFailed(secondary.getDB(name).foo.runCommand(
'find', {"readConcern": {"level": "majority"}, "maxTimeMS": 1000}));
// Reconfig to make the secondary the primary
var config = primary.getDB("local").system.replset.findOne();
config.members[0].priority = 0;
config.members[1].priority = 3;
config.version++;
primary = reconfig(replTest, config, true);
// Ensure maxTimeMS times out while waiting for this snapshot
assert.commandFailed(primary.getSiblingDB(name).foo.runCommand(
'find', {"readConcern": {"level": "majority"}, "maxTimeMS": 1000}));
})();
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