100 lines
4.3 KiB
JavaScript
100 lines
4.3 KiB
JavaScript
// Test initial sync with documents moving forward.
|
|
//
|
|
// This tests that initial sync succeeds when the clone phase encounters the same _id twice. We test
|
|
// that the destination node has the correct document with that _id at the end of initial sync.
|
|
//
|
|
// We also test that the initial sync succeeds when the clone phase encounters the same 'x' value
|
|
// twice, for a collection with a unique index {x: 1}.
|
|
//
|
|
// It works by deleting a document at the end of the range we are cloning, then growing a document
|
|
// from the beginning of the range so that it moves to the hole in the end of the range.
|
|
//
|
|
// This also works for wiredTiger, because we grow the document by deleting and reinserting it, so
|
|
// the newly inserted document is included in the cursor on the source.
|
|
(function() {
|
|
"use strict";
|
|
|
|
load("jstests/libs/get_index_helpers.js");
|
|
|
|
var rst = new ReplSetTest({name: "initial_sync_move_forward", nodes: 1});
|
|
rst.startSet();
|
|
rst.initiate();
|
|
|
|
var masterColl = rst.getPrimary().getDB("test").coll;
|
|
|
|
// Insert 500000 documents. Make the last two documents larger, so that {_id: 0, x: 0} and {_id:
|
|
// 1, x: 1} will fit into their positions when we grow them.
|
|
var count = 500000;
|
|
var bulk = masterColl.initializeUnorderedBulkOp();
|
|
for (var i = 0; i < count - 2; ++i) {
|
|
bulk.insert({_id: i, x: i});
|
|
}
|
|
var longString = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
|
|
bulk.insert({_id: count - 2, x: count - 2, longString: longString});
|
|
bulk.insert({_id: count - 1, x: count - 1, longString: longString});
|
|
assert.writeOK(bulk.execute());
|
|
|
|
// Create a unique index on {x: 1}.
|
|
assert.commandWorked(masterColl.ensureIndex({x: 1}, {unique: true}));
|
|
|
|
// Add a secondary.
|
|
var secondary = rst.add();
|
|
secondary.setSlaveOk();
|
|
var secondaryColl = secondary.getDB("test").coll;
|
|
|
|
// Pause initial sync when the secondary has copied {_id: 0, x: 0} and {_id: 1, x: 1}.
|
|
assert.commandWorked(secondary.adminCommand({
|
|
configureFailPoint: "initialSyncHangDuringCollectionClone",
|
|
data: {namespace: secondaryColl.getFullName(), numDocsToClone: 2},
|
|
mode: "alwaysOn"
|
|
}));
|
|
rst.reInitiate();
|
|
assert.soon(function() {
|
|
var logMessages = assert.commandWorked(secondary.adminCommand({getLog: "global"})).log;
|
|
for (var i = 0; i < logMessages.length; i++) {
|
|
if (logMessages[i].indexOf(
|
|
"initial sync - initialSyncHangDuringCollectionClone fail point enabled") !=
|
|
-1) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
});
|
|
|
|
// Delete {_id: count - 2} to make a hole. Grow {_id: 0} so that it moves into that hole. This
|
|
// will cause the secondary to clone {_id: 0} again.
|
|
// Change the value for 'x' so that we are not testing the uniqueness of 'x' in this case.
|
|
assert.writeOK(masterColl.remove({_id: 0, x: 0}));
|
|
assert.writeOK(masterColl.remove({_id: count - 2, x: count - 2}));
|
|
assert.writeOK(masterColl.insert({_id: 0, x: count, longString: longString}));
|
|
|
|
// Delete {_id: count - 1} to make a hole. Grow {x: 1} so that it moves into that hole. This
|
|
// will cause the secondary to clone {x: 1} again.
|
|
// Change the value for _id so that we are not testing the uniqueness of _id in this case.
|
|
assert.writeOK(masterColl.remove({_id: 1, x: 1}));
|
|
assert.writeOK(masterColl.remove({_id: count - 1, x: count - 1}));
|
|
assert.writeOK(masterColl.insert({_id: count, x: 1, longString: longString}));
|
|
|
|
// Resume initial sync.
|
|
assert.commandWorked(secondary.adminCommand(
|
|
{configureFailPoint: "initialSyncHangDuringCollectionClone", mode: "off"}));
|
|
|
|
// Wait for initial sync to finish.
|
|
rst.awaitSecondaryNodes();
|
|
|
|
// Check document count on secondary.
|
|
assert.eq(count - 2, secondaryColl.find().itcount());
|
|
|
|
// Check for {_id: 0} on secondary.
|
|
assert.eq(1, secondaryColl.find({_id: 0, x: count}).itcount());
|
|
|
|
// Check for {x: 1} on secondary.
|
|
assert.eq(1, secondaryColl.find({_id: count, x: 1}).itcount());
|
|
|
|
// Check for unique index on secondary.
|
|
var indexSpec = GetIndexHelpers.findByKeyPattern(secondaryColl.getIndexes(), {x: 1});
|
|
assert.neq(null, indexSpec);
|
|
assert.eq(true, indexSpec.unique);
|
|
rst.stopSet();
|
|
})();
|