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