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//
// Testing migrations between latest and last-stable mongod versions, where the
// donor is the latest version and the recipient the last-stable, and vice versa.
// Migrations should be successful.
//
load("./jstests/multiVersion/libs/verify_versions.js");
(function() {
"use strict";
var options = {shards: [{binVersion : "last-stable"},
{binVersion : "last-stable"},
{binVersion : "latest"},
{binVersion : "latest"}],
mongos: 1,
other: {mongosOptions: {binVersion : "last-stable"}}
};
var st = new ShardingTest(options);
assert.binVersion(st.shard0, "last-stable");
assert.binVersion(st.shard1, "last-stable");
assert.binVersion(st.shard2, "latest");
assert.binVersion(st.shard3, "latest");
assert.binVersion(st.s0, "last-stable");
var mongos = st.s0,
admin = mongos.getDB('admin'),
shards = mongos.getCollection('config.shards').find().toArray(),
fooDB = "fooTest",
fooNS = fooDB + ".foo",
fooColl = mongos.getCollection(fooNS),
fooDonor = st.shard0,
fooRecipient = st.shard2,
fooDonorColl = fooDonor.getCollection(fooNS),
fooRecipientColl = fooRecipient.getCollection(fooNS),
barDB = "barTest",
barNS = barDB + ".foo",
barColl = mongos.getCollection(barNS),
barDonor = st.shard3,
barRecipient = st.shard1,
barDonorColl = barDonor.getCollection(barNS),
barRecipientColl = barRecipient.getCollection(barNS);
assert.commandWorked(admin.runCommand({enableSharding: fooDB}));
assert.commandWorked(admin.runCommand({enableSharding: barDB}));
st.ensurePrimaryShard(fooDB, shards[0]._id);
st.ensurePrimaryShard(barDB, shards[3]._id);
assert.commandWorked(admin.runCommand({shardCollection: fooNS, key: {a: 1}}));
assert.commandWorked(admin.runCommand({split: fooNS, middle: {a: 10}}));
assert.commandWorked(admin.runCommand({shardCollection: barNS, key: {a: 1}}));
assert.commandWorked(admin.runCommand({split: barNS, middle: {a: 10}}));
fooColl.insert({a: 0});
assert.eq(null, fooColl.getDB().getLastError());
fooColl.insert({a: 10});
assert.eq(null, fooColl.getDB().getLastError());
assert.eq(0, fooRecipientColl.count());
assert.eq(2, fooDonorColl.count());
assert.eq(2, fooColl.count());
barColl.insert({a: 0});
assert.eq(null, barColl.getDB().getLastError());
barColl.insert({a: 10});
assert.eq(null, barColl.getDB().getLastError());
assert.eq(0, barRecipientColl.count());
assert.eq(2, barDonorColl.count());
assert.eq(2, barColl.count());
/**
* Perform two migrations:
* shard0 (last-stable) -> foo chunk -> shard2 (latest)
* shard3 (latest) -> bar chunk -> shard1 (last-stable)
*/
assert.commandWorked(admin.runCommand({moveChunk: fooNS, find: {a: 10}, to: shards[2]._id}));
assert.commandWorked(admin.runCommand({moveChunk: barNS, find: {a: 10}, to: shards[1]._id}));
assert.eq(1, fooRecipientColl.count(), "Foo collection migration failed. " +
"Last-stable -> latest mongod version migration failure.");
assert.eq(1, fooDonorColl.count(), "Foo donor lost its document. " +
"Last-stable -> latest mongod version migration failure.");
assert.eq(2, fooColl.count(), "Incorrect number of documents in foo collection. " +
"Last-stable -> latest mongod version migration failure.");
assert.eq(1, barRecipientColl.count(), "Bar collection migration failed. " +
"Latest -> last-stable mongod version migration failure.");
assert.eq(1, barDonorColl.count(), "Bar donor lost its document. " +
"Latest -> last-stable mongod version migration failure.");
assert.eq(2, barColl.count(), "Incorrect number of documents in bar collection. " +
"Latest -> last-stable mongod version migration failure.");
st.stop();
})();
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