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// Test resync command:
// 1. Start master/slave deployment.
// 2. Insert a document to seed the oplog.
// 3. Assert that the resync command fails when the slave is caught up to the master.
// 4. Stop the slave.
// 5. Insert enough documents to rotate the oplog.
// 6. Restart the slave.
// 7. Assert the resync command now works on the slave.
// 8. Assert the slave eventually has the same data.
// 9. Assert the slave now rejects the resync command.
//
// This test cannot be run on ephemeral storage engines, because after restarting, at step 6, the
// slave will not have any data and will start an initial sync, rejecting the resync command.
// @tags: [requires_persistence]
soonCount = function( count ) {
assert.soon( function() {
// print( "check count" );
// print( "count: " + s.getDB( baseName ).z.find().count() );
return s.getDB("foo").a.find().count() == count;
} );
};
doTest = function(signal, extraOpts) {
print("signal: "+signal);
var rt = new ReplTest( "repl2tests" );
// implicit small oplog makes slave get out of sync
m = rt.start( true, { oplogSize : "1" } );
s = rt.start(false, extraOpts);
am = m.getDB("foo").a;
am.save( { _id: new ObjectId() } );
soonCount( 1 );
assert.eq( 0, s.getDB( "admin" ).runCommand( { "resync" : 1 } ).ok );
rt.stop( false , signal );
big = new Array( 2000 ).toString();
for( i = 0; i < 1000; ++i )
am.save( { _id: new ObjectId(), i: i, b: big } );
s = rt.start(false, extraOpts, true);
print("earliest op in master: "+tojson(m.getDB("local").oplog.$main.find().sort({$natural:1}).limit(1).next()));
print("latest op on slave: "+tojson(s.getDB("local").sources.findOne()));
assert.soon( function() {
var result = s.getDB( "admin" ).runCommand( { "resync" : 1 } );
print("resync says: "+tojson(result));
return result.ok == 1;
} );
soonCount( 1001 );
assert.automsg( "m.getDB( 'local' ).getCollection( 'oplog.$main' ).stats().size > 0" );
as = s.getDB("foo").a;
assert.eq( 1, as.find( { i: 0 } ).count() );
assert.eq( 1, as.find( { i: 999 } ).count() );
assert.eq( 0, s.getDB( "admin" ).runCommand( { "resync" : 1 } ).ok );
rt.stop();
};
doTest(15, {"vv": null}); // SIGTERM
doTest(9, {"vv": null, journal: null }); // SIGKILL
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