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/**
* Test unfinished 4.0-style two phase drop can be handled in a restart with 4.2 binary.
*
* TODO: Remove this test in MongoDB 4.4 once upgrade & downgrade binaries both use the 4.2-style
* two phase drop.
*/
(function() {
"use strict";
TestData.skipCheckDBHashes = true; // Skip db hashes when restarting the replset.
load("jstests/libs/feature_compatibility_version.js");
load("jstests/replsets/libs/two_phase_drops.js"); // For 'TwoPhaseDropCollectionTest'.
const rst = new ReplSetTest({nodes: 2});
rst.startSet({binVersion: "4.0"});
rst.initiate();
const dbName = "test";
const collName = "a";
const primary = rst.getPrimary();
const secondary = rst.getSecondary();
const testDB = primary.getDB(dbName);
// Make sure collection creation is checkpointed.
assert.commandWorked(testDB.runCommand({insert: collName, documents: [{x: 0}]}));
assert.commandWorked(primary.getDB("admin").runCommand({fsync: 1}));
// Stop secondary's oplog application so the dropCollection can never be committed.
assert.commandWorked(
secondary.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "alwaysOn"}));
assert.commandWorked(testDB.runCommand({drop: collName}));
// Wait until the first phase (renaming) is done on the primary.
assert.soon(function() {
let res = primary.getDB("local").oplog.rs.find({o: {drop: collName}}).toArray();
jsTestLog("dropCollection oplog: " + tojson(res));
return res.length === 1;
});
// This will print out 'test.system.drop.xxxxxx.a' collection if there is one.
assert(TwoPhaseDropCollectionTest.collectionIsPendingDropInDatabase(testDB, collName));
// Kill the 4.0 replica set.
rst.stopSet(9 /* signal */,
true /* forRestart */,
{skipValidation: true, allowedExitCode: MongoRunner.EXIT_SIGKILL});
// Restart the replica set with 4.2 binaries.
rst.startSet({restart: true, binVersion: "latest"});
assert.soon(function() {
if (!TestData.hasOwnProperty("enableMajorityReadConcern") ||
TestData.enableMajorityReadConcern === true) {
// If enableMajorityReadConcern is true, that means the binary will use the new
// 4.2-style two phase drop. Then there should never be 'test.system.drop.xxxxx.a' in
// 'test' database because the first phase of 4.0-style drop (rename) was not
// checkpointed and that drop is currently being replayed via 4.2-style two phase drop
// mechanism.
assert(!TwoPhaseDropCollectionTest.collectionIsPendingDropInDatabase(
rst.getPrimary().getDB(dbName), collName));
}
let res = TwoPhaseDropCollectionTest.listCollections(rst.getPrimary().getDB(dbName));
jsTestLog("Collections in \'" + dbName + "\': " + tojson(res));
return res.length === 0;
});
rst.stopSet();
})();
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