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/**
* Sets up a test for WriteConflictException handling in applyOps with an insert workload.
*/
var ApplyOpsInsertWriteConflictTest = function(options) {
'use strict';
// Skip db hash check because this test may throw write conflicts and collmod fails.
TestData.skipCheckDBHashes = true;
if (!(this instanceof ApplyOpsInsertWriteConflictTest)) {
return new ApplyOpsInsertWriteConflictTest(options);
}
// Capture the 'this' reference
var self = this;
self.options = options;
/**
* Runs the test.
*/
this.run = function() {
var options = this.options;
var replTest = new ReplSetTest({nodes: 1});
replTest.startSet();
replTest.initiate();
var primary = replTest.getPrimary();
var primaryDB = primary.getDB('test');
var t = primaryDB.getCollection(options.testName);
t.drop();
assert.commandWorked(primaryDB.createCollection(t.getName()));
var numOps = 1000;
var ops = Array(numOps).fill('ignored').map((unused, i) => {
return {op: 'i', ns: t.getFullName(), o: {_id: i}};
});
// Probabilities for WCE are chosen based on empirical testing.
// The probability for WCE during an atomic applyOps should be much smaller than that for
// the non-atomic case because we have to attempt to re-apply the entire batch of 'numOps'
// operations on WCE in the atomic case.
var probability = (options.atomic ? 0.1 : 5.0) / numOps;
// Set up failpoint to trigger WriteConflictException during write operations.
assert.commandWorked(
primaryDB.adminCommand({setParameter: 1, traceWriteConflictExceptions: true}));
assert.commandWorked(primaryDB.adminCommand({
configureFailPoint: 'WTWriteConflictException',
mode: {activationProbability: probability}
}));
// This logs each operation being applied.
var previousLogLevel =
assert.commandWorked(primaryDB.setLogLevel(3, 'replication')).was.replication.verbosity;
var applyOpsResult = primaryDB.adminCommand({applyOps: ops, allowAtomic: options.atomic});
// Reset log level.
primaryDB.setLogLevel(previousLogLevel, 'replication');
assert.eq(
numOps,
applyOpsResult.applied,
'number of operations applied did not match list of generated insert operations. ' +
'applyOps result: ' + tojson(applyOpsResult));
applyOpsResult.results.forEach((operationSucceeded, i) => {
assert(operationSucceeded,
'applyOps failed: operation with index ' + i + ' failed: operation: ' +
tojson(ops[i], '', true) + '. applyOps result: ' + tojson(applyOpsResult));
});
assert.commandWorked(applyOpsResult);
replTest.stopSet();
};
};
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