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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
// Test mongos implementation of time-limited operations: verify that mongos correctly forwards max
// time to shards, and that mongos correctly times out max time sharded getmore operations (which
// are run in series on shards).
//
// Note that mongos does not time out commands or query ops (which remains responsibility of mongod,
// pending development of an interrupt framework for mongos).
(function() {
'use strict';
var st = new ShardingTest({shards: 2});
var mongos = st.s0;
var shards = [st.shard0, st.shard1];
var coll = mongos.getCollection("foo.bar");
var admin = mongos.getDB("admin");
var exceededTimeLimit = 50; // ErrorCodes::ExceededTimeLimit
var cursor;
var res;
// Helper function to configure "maxTimeAlwaysTimeOut" fail point on shards, which forces mongod
// to
// throw if it receives an operation with a max time. See fail point declaration for complete
// description.
var configureMaxTimeAlwaysTimeOut = function(mode) {
assert.commandWorked(shards[0].getDB("admin").runCommand(
{configureFailPoint: "maxTimeAlwaysTimeOut", mode: mode}));
assert.commandWorked(shards[1].getDB("admin").runCommand(
{configureFailPoint: "maxTimeAlwaysTimeOut", mode: mode}));
};
// Helper function to configure "maxTimeAlwaysTimeOut" fail point on shards, which prohibits
// mongod
// from enforcing time limits. See fail point declaration for complete description.
var configureMaxTimeNeverTimeOut = function(mode) {
assert.commandWorked(shards[0].getDB("admin").runCommand(
{configureFailPoint: "maxTimeNeverTimeOut", mode: mode}));
assert.commandWorked(shards[1].getDB("admin").runCommand(
{configureFailPoint: "maxTimeNeverTimeOut", mode: mode}));
};
//
// Pre-split collection: shard 0 takes {_id: {$lt: 0}}, shard 1 takes {_id: {$gte: 0}}.
//
assert.commandWorked(admin.runCommand({enableSharding: coll.getDB().getName()}));
admin.runCommand({movePrimary: coll.getDB().getName(), to: "shard0000"});
assert.commandWorked(admin.runCommand({shardCollection: coll.getFullName(), key: {_id: 1}}));
assert.commandWorked(admin.runCommand({split: coll.getFullName(), middle: {_id: 0}}));
assert.commandWorked(
admin.runCommand({moveChunk: coll.getFullName(), find: {_id: 0}, to: "shard0001"}));
//
// Insert 100 documents into sharded collection, such that each shard owns 50.
//
var bulk = coll.initializeUnorderedBulkOp();
for (var i = -50; i < 50; i++) {
bulk.insert({_id: i});
}
assert.writeOK(bulk.execute());
assert.eq(50, shards[0].getCollection(coll.getFullName()).count());
assert.eq(50, shards[1].getCollection(coll.getFullName()).count());
//
// Test that mongos correctly forwards max time to shards for sharded queries. Uses
// maxTimeAlwaysTimeOut to ensure mongod throws if it receives a max time.
//
// Positive test.
configureMaxTimeAlwaysTimeOut("alwaysOn");
cursor = coll.find();
cursor.maxTimeMS(60 * 1000);
assert.throws(function() {
cursor.next();
}, [], "expected query to fail in mongod due to maxTimeAlwaysTimeOut fail point");
// Negative test.
configureMaxTimeAlwaysTimeOut("off");
cursor = coll.find();
cursor.maxTimeMS(60 * 1000);
assert.doesNotThrow(function() {
cursor.next();
}, [], "expected query to not hit time limit in mongod");
//
// Test that mongos correctly times out max time sharded getmore operations. Uses
// maxTimeNeverTimeOut to ensure mongod doesn't enforce a time limit.
//
// TODO: This is unimplemented. A test for this functionality should be written as
// part of the work for SERVER-19410.
//
configureMaxTimeNeverTimeOut("alwaysOn");
// Positive test. TODO: see above.
// Negative test. ~10s operation, with a high (1-day) limit.
cursor = coll.find({
$where: function() {
sleep(100);
return true;
}
});
cursor.batchSize(2);
cursor.maxTimeMS(1000 * 60 * 60 * 24);
assert.doesNotThrow(function() {
cursor.next();
}, [], "did not expect mongos to time out first batch of query");
assert.doesNotThrow(function() {
cursor.itcount();
}, [], "did not expect getmore ops to hit the time limit");
configureMaxTimeNeverTimeOut("off");
//
// Test that mongos correctly forwards max time to shards for sharded commands. Uses
// maxTimeAlwaysTimeOut to ensure mongod throws if it receives a max time.
//
// Positive test for "validate".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = coll.runCommand("validate", {maxTimeMS: 60 * 1000});
assert.commandFailed(
res, "expected validate to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from validate, instead got: " + tojson(res));
// Negative test for "validate".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(coll.runCommand("validate", {maxTimeMS: 60 * 1000}),
"expected validate to not hit time limit in mongod");
// Positive test for "count".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = coll.runCommand("count", {maxTimeMS: 60 * 1000});
assert.commandFailed(res,
"expected count to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from count , instead got: " + tojson(res));
// Negative test for "count".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(coll.runCommand("count", {maxTimeMS: 60 * 1000}),
"expected count to not hit time limit in mongod");
// Positive test for "collStats".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = coll.runCommand("collStats", {maxTimeMS: 60 * 1000});
assert.commandFailed(
res, "expected collStats to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(
res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from collStats, instead got: " + tojson(res));
// Negative test for "collStats".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(coll.runCommand("collStats", {maxTimeMS: 60 * 1000}),
"expected collStats to not hit time limit in mongod");
// Positive test for "mapReduce".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = coll.runCommand("mapReduce",
{
map: function() {
emit(0, 0);
},
reduce: function(key, values) {
return 0;
},
out: {inline: 1},
maxTimeMS: 60 * 1000
});
assert.commandFailed(
res, "expected mapReduce to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(
res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from mapReduce, instead got: " + tojson(res));
// Negative test for "mapReduce".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(coll.runCommand("mapReduce",
{
map: function() {
emit(0, 0);
},
reduce: function(key, values) {
return 0;
},
out: {inline: 1},
maxTimeMS: 60 * 1000
}),
"expected mapReduce to not hit time limit in mongod");
// Positive test for "aggregate".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = coll.runCommand("aggregate", {pipeline: [], maxTimeMS: 60 * 1000});
assert.commandFailed(
res, "expected aggregate to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(
res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from aggregate , instead got: " + tojson(res));
// Negative test for "aggregate".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(coll.runCommand("aggregate", {pipeline: [], maxTimeMS: 60 * 1000}),
"expected aggregate to not hit time limit in mongod");
// Positive test for "moveChunk".
configureMaxTimeAlwaysTimeOut("alwaysOn");
res = admin.runCommand({
moveChunk: coll.getFullName(),
find: {_id: 0},
to: "shard0000",
maxTimeMS: 1000 * 60 * 60 * 24
});
assert.commandFailed(
res, "expected moveChunk to fail in mongod due to maxTimeAlwaysTimeOut fail point");
assert.eq(
res["code"],
exceededTimeLimit,
"expected code " + exceededTimeLimit + " from moveChunk, instead got: " + tojson(res));
// Negative test for "moveChunk".
configureMaxTimeAlwaysTimeOut("off");
assert.commandWorked(admin.runCommand({
moveChunk: coll.getFullName(),
find: {_id: 0},
to: "shard0000",
maxTimeMS: 1000 * 60 * 60 * 24
}),
"expected moveChunk to not hit time limit in mongod");
// TODO Test additional commmands.
st.stop();
})();
|
