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// This tests that slaveOk'd queries in sharded setups get correctly routed when a slave goes into
// RECOVERING state, and don't break
(function() {
'use strict';
var shardTest = new ShardingTest({ name: "recovering_slaveok",
shards: 2,
mongos: 2,
other: { rs: true } });
var mongos = shardTest.s0;
var mongosSOK = shardTest.s1;
mongosSOK.setSlaveOk();
var admin = mongos.getDB("admin");
var config = mongos.getDB("config");
var dbase = mongos.getDB("test");
var coll = dbase.getCollection("foo");
var dbaseSOk = mongosSOK.getDB( "" + dbase );
var collSOk = mongosSOK.getCollection( "" + coll );
var rsA = shardTest._rs[0].test;
var rsB = shardTest._rs[1].test;
rsA.getPrimary().getDB( "test_a" ).dummy.insert({ x : 1 });
rsB.getPrimary().getDB( "test_b" ).dummy.insert({ x : 1 });
rsA.awaitReplication();
rsB.awaitReplication();
print("1: initial insert");
coll.save({ _id : -1, a : "a", date : new Date() });
coll.save({ _id : 1, b : "b", date : new Date() });
print("2: shard collection");
shardTest.shardColl(coll, /* shardBy */ { _id : 1 }, /* splitAt */ { _id : 0 });
print("3: test normal and slaveOk queries");
// Make shardA and rsA the same
var shardA = shardTest.getShard(coll, { _id : -1 });
var shardAColl = shardA.getCollection( "" + coll );
var shardB = shardTest.getShard(coll, { _id : 1 });
if (shardA.name == rsB.getURL()) {
var swap = rsB;
rsB = rsA;
rsA = swap;
}
rsA.awaitReplication();
rsB.awaitReplication();
// Because of async migration cleanup, we need to wait for this condition to be true
assert.soon(function() { return coll.find().itcount() == collSOk.find().itcount(); });
assert.eq(shardAColl.find().itcount(), 1);
assert.eq(shardAColl.findOne()._id, -1);
print("5: make one of the secondaries RECOVERING");
var secs = rsA.getSecondaries();
var goodSec = secs[0];
var badSec = secs[1];
assert.commandWorked(badSec.adminCommand("replSetMaintenance"));
rsA.waitForState(badSec, ReplSetTest.State.RECOVERING);
print("6: stop non-RECOVERING secondary");
rsA.stop(goodSec);
print("7: check our regular and slaveOk query");
assert.eq(2, coll.find().itcount());
assert.eq(2, collSOk.find().itcount());
print("8: restart both our secondaries clean");
rsA.restart(rsA.getSecondaries(),
{ remember : true, startClean : true },
undefined,
5 * 60 * 1000);
print("9: wait for recovery");
rsA.waitForState(rsA.getSecondaries(), rsA.SECONDARY, 5 * 60 * 1000 );
print("10: check our regular and slaveOk query");
// We need to make sure our nodes are considered accessible from mongos - otherwise we fail
// See SERVER-7274
ReplSetTest.awaitRSClientHosts(coll.getMongo(), rsA.nodes, { ok : true });
ReplSetTest.awaitRSClientHosts(coll.getMongo(), rsB.nodes, { ok : true });
// We need to make sure at least one secondary is accessible from mongos - otherwise we fail
// See SERVER-7699
ReplSetTest.awaitRSClientHosts(collSOk.getMongo(), [rsA.getSecondaries()[0]],
{ secondary : true, ok : true });
ReplSetTest.awaitRSClientHosts(collSOk.getMongo(), [rsB.getSecondaries()[0]],
{ secondary : true, ok : true });
print("SlaveOK Query...");
var sOKCount = collSOk.find().itcount();
var collCount = null
try{
print("Normal query...")
collCount = coll.find().itcount();
}
catch(e){
printjson(e);
// There may have been a stepdown caused by step 8, so we run this twice in a row. The first
// time can error out.
print("Error may have been caused by stepdown, try again.")
collCount = coll.find().itcount();
}
assert.eq(collCount, sOKCount);
shardTest.stop();
})();
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