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/**
* Tests that arbiters cannot be used to acknowledge w:number writes even when some of the
* required secondaries are unavailable. After a write commits, the corresponding
* lastCommittedOpTime becomes the lastAppliedOpTime on arbiters in the set. This particular test
* uses a PSSA set where one of the secondaries is non-voting, which makes the majority 2 nodes.
* This means that a write needs to replicate to only one of the secondaries to commit. A w:3
* write would thus require only one additional member to fully satisfy the write concern after
* committing. This test therefore shuts down the last secondary and verifies that the arbiter does
* *not* get picked in its place and the w:3 write times out instead.
*/
(function() {
"use strict";
const name = "arbiters_not_included_in_w3_wc";
const rst = new ReplSetTest({name: name, nodes: 4});
const nodes = rst.nodeList();
rst.startSet();
rst.initiate({
"_id": name,
"members": [
{"_id": 0, "host": nodes[0]},
{"_id": 1, "host": nodes[1], priority: 0},
{"_id": 2, "host": nodes[2], priority: 0, votes: 0},
{"_id": 3, "host": nodes[3], "arbiterOnly": true}
]
});
const dbName = "test";
const collName = name;
const primary = rst.getPrimary();
const testDB = primary.getDB(dbName);
const testColl = testDB.getCollection(collName);
assert.commandWorked(
testColl.insert({"a": 1}, {writeConcern: {w: 3, wtimeout: ReplSetTest.kDefaultTimeoutMS}}));
jsTestLog("Shutting down the non-voting secondary");
rst.stop(2);
jsTestLog("Issuing a w:3 write and confirming that it times out");
assert.commandFailedWithCode(testColl.insert({"b": 2}, {writeConcern: {w: 3, wtimeout: 5 * 1000}}),
ErrorCodes.WriteConcernFailed);
rst.stopSet();
})();
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