mirror of https://github.com/mongodb/mongo
88 lines
3.0 KiB
JavaScript
88 lines
3.0 KiB
JavaScript
/**
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* Tests the DataConsistencyChecker#getCollectionDiffUsingSessions() method for comparing the
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* contents between a primary and secondary server.
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*
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* @tags: [
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* requires_replication,
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* ]
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*/
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import {ReplSetTest} from "jstests/libs/replsettest.js";
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const rst = new ReplSetTest({nodes: 2});
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rst.startSet();
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rst.initiate();
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const dbName = "diff_using_session_test";
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const collName = "mycoll";
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const primaryDB = rst.getPrimary().startSession().getDatabase(dbName);
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const secondaryDB = rst.getSecondary().startSession().getDatabase(dbName);
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// The default WC is majority and rsSyncApplyStop failpoint will prevent satisfying any majority
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// writes.
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assert.commandWorked(
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rst.getPrimary().adminCommand({setDefaultRWConcern: 1, defaultWriteConcern: {w: 1}, writeConcern: {w: "majority"}}),
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);
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assert.commandWorked(
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primaryDB[collName].insert(
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Array.from({length: 100}, (_, i) => ({_id: i, num: i * 2})),
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{writeConcern: {w: 2}},
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),
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);
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// There should be no missing or mismatched documents after having waited for replication.
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let diff = DataConsistencyChecker.getCollectionDiffUsingSessions(
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primaryDB.getSession(),
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secondaryDB.getSession(),
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dbName,
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collName,
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);
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assert.eq(diff, {docsWithDifferentContents: [], docsMissingOnSource: [], docsMissingOnSyncing: []});
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// We pause replication on the secondary to intentionally cause the contents between the primary and
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// the secondary to differ.
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assert.commandWorked(secondaryDB.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "alwaysOn"}));
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checkLog.contains(secondaryDB, "rsSyncApplyStop fail point enabled. Blocking until fail point is disabled");
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const expectedMissingOnSecondary = [
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{_id: 30.2, num: -1},
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{_id: 70.4, num: -2},
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];
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const expectedMissingOnPrimary = [
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{_id: 10, num: 20},
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{_id: 50, num: 100},
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];
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assert.commandWorked(primaryDB[collName].insert(expectedMissingOnSecondary));
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assert.commandWorked(
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primaryDB[collName].remove({_id: {$in: expectedMissingOnPrimary.map((doc) => doc._id)}}, {justOne: false}),
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);
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assert.commandWorked(primaryDB[collName].update({_id: {$in: [40, 90]}}, {$set: {extra: "yes"}}, {multi: true}));
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// Type fidelity is expected to be preserved by replication so intentionally test comparisons of
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// distinct but equivalent BSON types.
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assert.commandWorked(primaryDB[collName].update({_id: 2}, {$set: {num: NumberLong(4)}}));
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diff = DataConsistencyChecker.getCollectionDiffUsingSessions(
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primaryDB.getSession(),
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secondaryDB.getSession(),
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dbName,
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collName,
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);
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assert.eq(diff, {
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docsWithDifferentContents: [
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{sourceNode: {_id: 2, num: NumberLong(4)}, syncingNode: {_id: 2, num: 4}},
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{sourceNode: {_id: 40, num: 80, extra: "yes"}, syncingNode: {_id: 40, num: 80}},
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{sourceNode: {_id: 90, num: 180, extra: "yes"}, syncingNode: {_id: 90, num: 180}},
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],
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docsMissingOnSource: expectedMissingOnPrimary,
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docsMissingOnSyncing: expectedMissingOnSecondary,
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});
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assert.commandWorked(secondaryDB.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "off"}));
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rst.stopSet();
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