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/**
* Terminates mongod during a clean shutdown.
*
* As part of a clean shutdown, WiredTiger takes a final checkpoint. Terminating mongod during this
* process results in an unclean shutdown. During startup recovery, WiredTiger will use the last
* successful checkpoint taken and replay any journal files. Replication recovery will replay any
* operations beyond the stable timestamp from the oplog.
*
* This test is verifying that startup recovery works as designed following an unclean shutdown
* during the closing checkpoint.
*
* @tags: [requires_wiredtiger, requires_persistence, requires_replication]
*/
(function() {
"use strict";
// This test triggers an unclean shutdown, which may cause inaccurate fast counts.
TestData.skipEnforceFastCountOnValidate = true;
load("jstests/libs/parallel_shell_helpers.js"); // For startParallelShell
load('jstests/libs/parallelTester.js'); // For Thread
const kSeparator = "/";
const copyDataFiles = function(src, dest) {
ls(src).forEach((file) => {
if (file.endsWith(kSeparator)) {
return;
}
let fileName = file.substring(file.lastIndexOf(kSeparator) + 1);
copyFile(file, dest + kSeparator + fileName);
});
ls(src + kSeparator + "journal").forEach((file) => {
let fileName = file.substring(file.lastIndexOf(kSeparator) + 1);
copyFile(file, dest + kSeparator + "journal" + kSeparator + fileName);
});
};
// Multi-document prepared transaction workload executed by the client threads.
const threadWorkload = function(host, threadId, start, end) {
load("jstests/core/txns/libs/prepare_helpers.js");
try {
const conn = new Mongo(host);
let session;
let sessionDB;
let sessionColl;
for (let i = start; i < end; i++) {
if (session == undefined) {
session = conn.startSession({causalConsistency: false});
sessionDB = session.getDatabase("test");
sessionColl = sessionDB.getCollection("foo");
jsTestLog("ThreadId: " + threadId + ", starting transaction");
session.startTransaction();
}
const docId = Math.floor(Math.random() * (end - start + 1)) + start;
jsTestLog("ThreadId: " + threadId + ", inserting document with _id " +
docId.toString());
const insertRes = sessionColl.insert({
_id: docId,
a: docId,
b: docId,
c: docId,
d: docId,
e: docId,
});
if (insertRes.nInserted == 0) {
// DuplicateKey error using the generated docId for _id. Start a new transaction.
session = undefined;
continue;
}
if (i % 2 == 0) {
assert.commandWorked(sessionColl.update({_id: docId}, {$unset: {a: 1}}));
assert.commandWorked(sessionColl.update({_id: docId}, {$set: {a: i}}));
assert.commandWorked(sessionColl.update({_id: docId}, {$inc: {b: 1}}));
assert.commandWorked(sessionColl.update({_id: docId}, {$inc: {c: 2}}));
assert.commandWorked(sessionColl.update({_id: docId}, {$inc: {d: 3}}));
assert.commandWorked(sessionColl.update({_id: docId}, {$set: {e: i * i}}));
}
if (i % 4 == 0) {
assert.commandWorked(sessionColl.deleteOne({_id: docId}));
}
if (i % 25 == 0) {
jsTestLog("ThreadId: " + threadId + ", preparing transaction");
let prepareTimestamp = PrepareHelpers.prepareTransaction(session);
if (i % 50 == 0) {
// Only commit half of the prepared transactions.
jsTestLog("ThreadId: " + threadId + ", committing prepared transaction");
PrepareHelpers.commitTransaction(session, prepareTimestamp);
} else {
jsTestLog("ThreadId: " + threadId +
", leaving prepared transaction uncommitted");
}
session = undefined;
}
if (i % 1000 == 0) {
jsTestLog("ThreadId: " + threadId + ", Progress: " + (i - start) + "/" +
(end - start));
}
}
} catch (e) {
// The shell may throw after mongod was terminated.
}
};
const rst = new ReplSetTest({
nodes: 1,
nodeOptions: {
syncdelay: 10, // Fast checkpoint intervals.
slowms: 30000, // Don't log slow queries.
setParameter:
{logComponentVerbosity: tojsononeline({storage: {recovery: 2, wt: {wtCheckpoint: 1}}})},
wiredTigerEngineConfigString:
"debug_mode=(slow_checkpoint=true,table_logging=true),verbose=[checkpoint_cleanup,checkpoint_progress]"
}
});
rst.startSet();
rst.initiate();
let primary = rst.getPrimary();
const dbName = "test";
const collName = "foo";
let db = primary.getDB(dbName);
assert.commandWorked(db.createCollection(collName));
let coll = db.getCollection(collName);
// Create many indexes to have more table files.
assert.commandWorked(coll.createIndexes([{a: 1}, {b: 1}, {c: 1}, {d: 1}, {e: 1}]));
const kNumUncleanShutdowns = 5;
let numUncleanShutdowns = 0;
while (numUncleanShutdowns < kNumUncleanShutdowns) {
jsTestLog("Execution #" + numUncleanShutdowns);
const kOpsPerThread = 1000000;
const kNumThreads = 10;
let threads = [];
for (let i = 0; i < kNumThreads; i++) {
let thread = new Thread(threadWorkload,
primary.host,
i,
i * kOpsPerThread,
kOpsPerThread + (i * kOpsPerThread));
threads.push(thread);
thread.start();
}
// Wait between 30 to 60 seconds before shutting down mongod.
const secsToWait = Math.floor(Math.random() * 30) + 30;
jsTestLog("Waiting " + secsToWait + " seconds before shutting down");
sleep(secsToWait * 1000);
// Start a clean shutdown.
clearRawMongoProgramOutput();
const awaitShutdown = startParallelShell(() => {
db.adminCommand({shutdown: 1});
}, primary.port);
assert.soon(() => {
const logContents = rawMongoProgramOutput();
return logContents.indexOf("close_ckpt") > 0;
});
// During the shutdown checkpoint, kill the process.
const pid = primary.pid;
const kSIGKILL = 9;
jsTestLog("Killing pid: " + pid);
stopMongoProgramByPid(pid, kSIGKILL);
jsTestLog("Killed pid: " + pid);
const exitCode = awaitShutdown({checkExitSuccess: false});
assert.neq(0, exitCode, 'Expected shell to exit abnormally due to shutdown');
numUncleanShutdowns++;
threads.forEach(function(thread) {
thread.join();
});
// Make a copy of the data files after terminating the shutdown. This is helpful for
// investigations when there is a failure.
const copyPath = primary.dbpath + kSeparator + "exec" + numUncleanShutdowns.toString();
resetDbpath(copyPath);
mkdir(copyPath + kSeparator + "journal");
copyDataFiles(primary.dbpath, copyPath);
rst.restart(primary);
primary = rst.getPrimary();
db = primary.getDB(dbName);
coll = db.getCollection(collName);
}
rst.stopSet();
}());
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