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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