68 lines
2.2 KiB
JavaScript
68 lines
2.2 KiB
JavaScript
// Tests tracking of latestOptime and earliestOptime in serverStatus.oplog
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function timestampCompare(o1, o2) {
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if (o1.t < o2.t) {
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return -1;
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} else if (o1.t > o2.t) {
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return 1;
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} else {
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if (o1.i < o2.i) {
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return -1;
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} else if (o1.i > o2.i) {
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return 1;
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} else {
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return 0;
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}
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}
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}
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function optimesAreEqual(replTest) {
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var prevStatus = replTest.nodes[0].getDB('admin').serverStatus({oplog: true}).oplog;
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for (var i = 1; i < replTest.nodes.length; i++) {
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var status = replTest.nodes[i].getDB('admin').serverStatus({oplog: true}).oplog;
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if (timestampCompare(prevStatus.latestOptime, status.latestOptime) != 0) {
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return false;
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}
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prevStatus = status;
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}
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return true;
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}
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var replTest = new ReplSetTest({name: "replStatus", nodes: 3, oplogSize: 1});
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replTest.startSet();
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replTest.initiate();
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var master = replTest.getPrimary();
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replTest.awaitReplication();
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replTest.awaitSecondaryNodes();
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// Check initial optimes
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assert(optimesAreEqual(replTest));
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var initialInfo = master.getDB('admin').serverStatus({oplog: true}).oplog;
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// Do an insert to increment optime, but without rolling the oplog
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// latestOptime should be updated, but earliestOptime should be unchanged
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var options = {writeConcern: {w: replTest.nodes.length}};
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assert.writeOK(master.getDB('test').foo.insert({a: 1}, options));
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assert(optimesAreEqual(replTest));
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var info = master.getDB('admin').serverStatus({oplog: true}).oplog;
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assert.gt(timestampCompare(info.latestOptime, initialInfo.latestOptime), 0);
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assert.eq(timestampCompare(info.earliestOptime, initialInfo.earliestOptime), 0);
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// Insert some large documents to force the oplog to roll over
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var largeString = new Array(1024 * 10).toString();
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for (var i = 0; i < 2000; i++) {
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master.getDB('test').foo.insert({largeString: largeString}, options);
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}
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assert.soon(function() {
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return optimesAreEqual(replTest);
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});
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// Test that earliestOptime was updated
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info = master.getDB('admin').serverStatus({oplog: true}).oplog;
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assert.gt(timestampCompare(info.latestOptime, initialInfo.latestOptime), 0);
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assert.gt(timestampCompare(info.earliestOptime, initialInfo.earliestOptime), 0);
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replTest.stopSet();
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