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/**
* Test that the 'newlyAdded' field of a MemberConfig is not added for nodes configured with
* 'votes:0', but is also removed if a node ends up with 'votes:0' and 'newlyAdded'.
*
* @tags: [
* ]
*/
(function() {
"use strict";
load('jstests/replsets/rslib.js');
load("jstests/libs/fail_point_util.js");
const testName = jsTestName();
const dbName = "testdb";
const collName = "testcoll";
const rst = new ReplSetTest({name: testName, nodes: 1});
rst.startSet();
rst.initiateWithHighElectionTimeout();
const primary = rst.getPrimary();
const primaryDb = primary.getDB(dbName);
const primaryColl = primaryDb.getCollection(collName);
assert.commandWorked(primaryColl.insert({a: 1}));
jsTestLog("Adding a new non-voting node to the replica set");
const secondary0 = rst.add({
rsConfig: {priority: 0, votes: 0},
setParameter: {
'failpoint.initialSyncHangBeforeFinish': tojson({mode: 'alwaysOn'}),
'numInitialSyncAttempts': 1,
}
});
rst.reInitiate();
assert.commandWorked(secondary0.adminCommand({
waitForFailPoint: "initialSyncHangBeforeFinish",
timesEntered: 1,
maxTimeMS: kDefaultWaitForFailPointTimeout
}));
jsTestLog("Checking that 'newlyAdded' field is not set");
assert(!isMemberNewlyAdded(primary, 1));
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[1].votes);
assertVoteCount(primary, {
votingMembersCount: 1,
majorityVoteCount: 1,
writableVotingMembersCount: 1,
writeMajorityCount: 1,
totalMembersCount: 2,
});
jsTestLog("Waiting for initial sync to complete");
assert.commandWorked(
secondary0.adminCommand({configureFailPoint: "initialSyncHangBeforeFinish", mode: "off"}));
rst.waitForState(secondary0, ReplSetTest.State.SECONDARY);
jsTestLog("Checking that 'newlyAdded' field is still not set");
assert(!isMemberNewlyAdded(primary, 1));
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[1].votes);
assertVoteCount(primary, {
votingMembersCount: 1,
majorityVoteCount: 1,
writableVotingMembersCount: 1,
writeMajorityCount: 1,
totalMembersCount: 2,
});
jsTestLog("Making sure the set can accept w:2 writes");
assert.commandWorked(primaryColl.insert({a: 2}, {writeConcern: {w: 2}}));
jsTestLog("Adding a new voting node to the replica set");
const secondary1 = rst.add({
rsConfig: {priority: 0},
setParameter: {
'failpoint.initialSyncHangBeforeFinish': tojson({mode: 'alwaysOn'}),
'numInitialSyncAttempts': 1,
}
});
rst.reInitiate();
assert.commandWorked(secondary1.adminCommand({
waitForFailPoint: "initialSyncHangBeforeFinish",
timesEntered: 1,
maxTimeMS: kDefaultWaitForFailPointTimeout
}));
jsTestLog("Checking that 'newlyAdded' field is set");
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[1].votes);
assert.eq(1, rst.getReplSetConfigFromNode(primary.nodeId).members[2].votes);
assert(!isMemberNewlyAdded(primary, 1));
assert(isMemberNewlyAdded(primary, 2));
assertVoteCount(primary, {
votingMembersCount: 1,
majorityVoteCount: 1,
writableVotingMembersCount: 1,
writeMajorityCount: 1,
totalMembersCount: 3,
});
jsTestLog("Reconfiguring new node to have 0 votes");
let cfg = rst.getReplSetConfigFromNode(primary.nodeId);
cfg.version += 1;
cfg.members[2].votes = 0;
assert.commandWorked(
primary.adminCommand({replSetReconfig: cfg, maxTimeMS: ReplSetTest.kDefaultTimeoutMS}));
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[1].votes);
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[2].votes);
assert(!isMemberNewlyAdded(primary, 1));
assert(isMemberNewlyAdded(primary, 2));
assertVoteCount(primary, {
votingMembersCount: 1,
majorityVoteCount: 1,
writableVotingMembersCount: 1,
writeMajorityCount: 1,
totalMembersCount: 3,
});
jsTestLog("Waiting for second initial sync to complete");
assert.commandWorked(
secondary1.adminCommand({configureFailPoint: "initialSyncHangBeforeFinish", mode: "off"}));
rst.waitForState(secondary1, ReplSetTest.State.SECONDARY);
jsTestLog("Checking that 'newlyAdded' field was removed");
waitForNewlyAddedRemovalForNodeToBeCommitted(primary, 2);
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[1].votes);
assert.eq(0, rst.getReplSetConfigFromNode(primary.nodeId).members[2].votes);
assert(!isMemberNewlyAdded(primary, 1));
assertVoteCount(primary, {
votingMembersCount: 1,
majorityVoteCount: 1,
writableVotingMembersCount: 1,
writeMajorityCount: 1,
totalMembersCount: 3,
});
jsTestLog("Making sure the set can accept w:3 writes");
assert.commandWorked(primaryColl.insert({a: 3}, {writeConcern: {w: 3}}));
rst.stopSet();
})();
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