58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
// Test handling of clock skew and optimes across mongod instances
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//
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// There is no automatic fail-over in a master/slave deployment, so if the master goes down, no new
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// master will be elected. Therefore if the master is using an ephemeral storage engine, it cannot
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// be restarted without losing all data. This test expects that restarting the master will maintain
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// the node's data, so cannot be run with ephemeral storage engines.
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// @tags: [requires_persistence]
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var baseName = "jstests_repl_master1test";
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oplog = function() {
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return m.getDB("local").oplog.$main;
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};
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lastop = function() {
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return oplog().find().sort({$natural: -1}).next();
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};
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am = function() {
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return m.getDB(baseName).a;
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};
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rt = new ReplTest(baseName);
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m = rt.start(true);
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am().save({});
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assert.eq("i", lastop().op);
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op = lastop();
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printjson(op);
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op.ts.t = op.ts.t + 600000; // 10 minutes
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assert.commandWorked(m.getDB("local").runCommand({godinsert: "oplog.$main", obj: op}));
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rt.stop(true);
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m = rt.start(true, null, true);
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assert.eq(op.ts.t, lastop().ts.t);
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am().save({});
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assert.eq(op.ts.t, lastop().ts.t);
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assert.eq(op.ts.i + 1, lastop().ts.i);
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op = lastop();
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printjson(op);
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op.ts.i = Math.pow(2, 31) - 1;
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printjson(op);
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assert.commandWorked(m.getDB("local").runCommand({godinsert: "oplog.$main", obj: op}));
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rt.stop(true);
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m = rt.start(true, null, true);
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assert.eq(op.ts.i, lastop().ts.i);
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assert.throws(function() {
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am().save({}); // triggers fassert because ofclock skew
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});
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assert.neq(0, rt.stop(true)); // fasserted
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