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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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