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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
(function() {
// 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}});
s2 = s._mongos[1];
db = s.getDB("test");
s.adminCommand({enablesharding: "test"});
s.ensurePrimaryShard('test', 'shard0001');
s.adminCommand({shardcollection: "test.foo", key: {num: 1}});
// Ensure that the second mongos will see the movePrimary
s.configRS.awaitLastOpCommitted();
assert(sh.getBalancerState(), "A1");
s.stopBalancer();
assert(!sh.getBalancerState(), "A2");
s.startBalancer();
assert(sh.getBalancerState(), "A3");
s.stopBalancer();
assert(!sh.getBalancerState(), "A4");
s.config.databases.find().forEach(printjson);
a = s.getDB("test").foo;
b = s2.getDB("test").foo;
primary = s.getPrimaryShard("test").getDB("test").foo;
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("foo"), "on 1 shards");
s.adminCommand({split: "test.foo", middle: {num: 2}});
s.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.writeOK(secondary.insert({_id: 111, num: -3}));
doCounts("after wrong save", total, true);
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
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("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");
myto = s.getOther(s.getPrimaryShard("test")).name;
print("counts before move: " + tojson(s.shardCounts("foo")));
s.adminCommand({movechunk: "test.foo", find: {num: 1}, to: myto, _waitForDelete: true});
print("counts after move: " + tojson(s.shardCounts("foo")));
s.printCollectionInfo("test.foo");
assert.eq(1, s.onNumShards("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");
print("*** dropDatabase setup");
s.printShardingStatus();
s.adminCommand({shardcollection: "test.foo", key: {num: 1}});
a.save({num: 2});
a.save({num: 3});
s.adminCommand({split: "test.foo", middle: {num: 2}});
s.adminCommand({
movechunk: "test.foo",
find: {num: 3},
to: s.getOther(s.getPrimaryShard("test")).name,
_waitForDelete: true
});
s.printShardingStatus();
s.printCollectionInfo("test.foo", "after dropDatabase setup");
doCounts("after dropDatabase setup2");
s.printCollectionInfo("test.foo", "after dropDatabase setup3");
print("*** ready to call dropDatabase");
res = s.getDB("test").dropDatabase();
assert.eq(1, res.ok, "dropDatabase failed : " + tojson(res));
// Waiting for SERVER-2253
assert.eq(0,
s.config.databases.count({_id: "test"}),
"database 'test' was dropped but still appears in configDB");
s.printShardingStatus();
s.printCollectionInfo("test.foo", "after dropDatabase call 1");
assert.eq(0, doCounts("after dropDatabase called"));
// ---- retry commands SERVER-1471 ----
s.adminCommand({enablesharding: "test2"});
s.ensurePrimaryShard('test2', 'shard0000');
s.adminCommand({shardcollection: "test2.foo", key: {num: 1}});
dba = s.getDB("test2");
dbb = s2.getDB("test2");
dba.foo.save({num: 1});
dba.foo.save({num: 2});
dba.foo.save({num: 3});
assert.eq(1, s.onNumShards("foo", "test2"), "B on 1 shards");
assert.eq(3, dba.foo.count(), "Ba");
assert.eq(3, dbb.foo.count(), "Bb");
s.adminCommand({split: "test2.foo", middle: {num: 2}});
s.adminCommand({
movechunk: "test2.foo",
find: {num: 3},
to: s.getOther(s.getPrimaryShard("test2")).name,
_waitForDelete: true
});
assert.eq(2, s.onNumShards("foo", "test2"), "B on 2 shards");
x = dba.foo.stats();
printjson(x);
y = dbb.foo.stats();
printjson(y);
s.stop();
})();
|