1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
(function() {
'use strict';
// Include helpers for analyzing explain output.
load("jstests/libs/analyze_plan.js");
var s = new ShardingTest({name: "shard3", shards: 2, mongos: 2, other: {enableBalancer: true}});
var s2 = s.s1;
assert.commandWorked(s.s0.adminCommand({enablesharding: "test"}));
s.ensurePrimaryShard('test', s.shard1.shardName);
assert.commandWorked(s.s0.adminCommand({shardcollection: "test.foo", key: {num: 1}}));
// Ensure that the second mongos will see the movePrimary
s.configRS.awaitLastOpCommitted();
assert(s.getBalancerState(), "A1");
s.stopBalancer();
assert(!s.getBalancerState(), "A2");
s.startBalancer();
assert(s.getBalancerState(), "A3");
s.stopBalancer();
assert(!s.getBalancerState(), "A4");
s.config.databases.find().forEach(printjson);
var a = s.getDB("test").foo;
var b = s2.getDB("test").foo;
var primary = s.getPrimaryShard("test").getDB("test").foo;
var secondary = s.getOther(primary.name).getDB("test").foo;
a.save({num: 1});
a.save({num: 2});
a.save({num: 3});
assert.eq(3, a.find().toArray().length, "normal A");
assert.eq(3, b.find().toArray().length, "other A");
assert.eq(3, primary.count(), "p1");
assert.eq(0, secondary.count(), "s1");
assert.eq(1, s.onNumShards("test", "foo"), "on 1 shards");
assert.commandWorked(s.s0.adminCommand({split: "test.foo", middle: {num: 2}}));
assert.commandWorked(s.s0.adminCommand({
movechunk: "test.foo",
find: {num: 3},
to: s.getOther(s.getPrimaryShard("test")).name,
_waitForDelete: true
}));
assert(primary.find().toArray().length > 0, "blah 1");
assert(secondary.find().toArray().length > 0, "blah 2");
assert.eq(3, primary.find().itcount() + secondary.find().itcount(), "blah 3");
assert.eq(3, a.find().toArray().length, "normal B");
assert.eq(3, b.find().toArray().length, "other B");
printjson(primary._db._adminCommand("shardingState"));
// --- filtering ---
function doCounts(name, total, onlyItCounts) {
total = total || (primary.count() + secondary.count());
if (!onlyItCounts)
assert.eq(total, a.count(), name + " count");
assert.eq(total, a.find().sort({n: 1}).itcount(), name + " itcount - sort n");
assert.eq(total, a.find().itcount(), name + " itcount");
assert.eq(total, a.find().sort({_id: 1}).itcount(), name + " itcount - sort _id");
return total;
}
var total = doCounts("before wrong save");
assert.commandWorked(secondary.insert({_id: 111, num: -3}));
doCounts("after wrong save", total, true);
var e = a.find().explain("executionStats").executionStats;
assert.eq(3, e.nReturned, "ex1");
assert.eq(0, e.totalKeysExamined, "ex2");
assert.eq(4, e.totalDocsExamined, "ex3");
var chunkSkips = 0;
for (var shard in e.executionStages.shards) {
var theShard = e.executionStages.shards[shard];
chunkSkips += getChunkSkips(theShard.executionStages);
}
assert.eq(1, chunkSkips, "ex4");
// SERVER-4612
// make sure idhack obeys chunks
var x = a.findOne({_id: 111});
assert(!x, "idhack didn't obey chunk boundaries " + tojson(x));
// --- move all to 1 ---
print("MOVE ALL TO 1");
assert.eq(2, s.onNumShards("test", "foo"), "on 2 shards");
s.printCollectionInfo("test.foo");
assert(a.findOne({num: 1}));
assert(b.findOne({num: 1}));
print("GOING TO MOVE");
assert(a.findOne({num: 1}), "pre move 1");
s.printCollectionInfo("test.foo");
var myto = s.getOther(s.getPrimaryShard("test")).name;
print("counts before move: " + tojson(s.shardCounts("test,", "foo")));
assert.commandWorked(
s.s0.adminCommand({movechunk: "test.foo", find: {num: 1}, to: myto, _waitForDelete: true}));
print("counts after move: " + tojson(s.shardCounts("test", "foo")));
s.printCollectionInfo("test.foo");
assert.eq(1, s.onNumShards("test", "foo"), "on 1 shard again");
assert(a.findOne({num: 1}), "post move 1");
assert(b.findOne({num: 1}), "post move 2");
print("*** drop");
s.printCollectionInfo("test.foo", "before drop");
a.drop();
s.printCollectionInfo("test.foo", "after drop");
assert.eq(0, a.count(), "a count after drop");
assert.eq(0, b.count(), "b count after drop");
s.printCollectionInfo("test.foo", "after counts");
assert.eq(0, primary.count(), "p count after drop");
assert.eq(0, secondary.count(), "s count after drop");
// ---- retry commands SERVER-1471 ----
assert.commandWorked(s.s0.adminCommand({enablesharding: "test2"}));
s.ensurePrimaryShard('test2', s.shard0.shardName);
assert.commandWorked(s.s0.adminCommand({shardcollection: "test2.foo", key: {num: 1}}));
var dba = s.getDB("test2");
var dbb = s2.getDB("test2");
dba.foo.save({num: 1});
dba.foo.save({num: 2});
dba.foo.save({num: 3});
assert.eq(1, s.onNumShards("test2", "foo"), "B on 1 shards");
assert.eq(3, dba.foo.count(), "Ba");
assert.eq(3, dbb.foo.count(), "Bb");
assert.commandWorked(s.s0.adminCommand({split: "test2.foo", middle: {num: 2}}));
assert.commandWorked(s.s0.adminCommand({
movechunk: "test2.foo",
find: {num: 3},
to: s.getOther(s.getPrimaryShard("test2")).name,
_waitForDelete: true
}));
assert.eq(2, s.onNumShards("test2", "foo"), "B on 2 shards");
printjson(dba.foo.stats());
printjson(dbb.foo.stats());
s.stop();
})();
|
