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
|
(function() {
var s = new ShardingTest({name: "stats", shards: 2, mongos: 1});
s.adminCommand({enablesharding: "test"});
db = s.getDB("test");
s.ensurePrimaryShard('test', s.shard1.shardName);
function numKeys(o) {
var num = 0;
for (var x in o)
num++;
return num;
}
db.foo.drop();
// SERVER-29678 changed collStats so versions > 4.0 now return 0s on NS not found
if (MongoRunner.getBinVersionFor(jsTest.options().mongosBinVersion) === '4.0') {
// TODO: This should be fixed in 4.4
let res = db.foo.stats();
if (res.ok === 1) {
// Possible to hit a shard that is actually version >= 4.2 => result should be zeros
assert(res.size === 0 && res.count === 0 && res.storageSize === 0 &&
res.nindexes === 0);
} else {
assert.commandFailed(
db.foo.stats(),
'db.collection.stats() should fail non-existent in versions <= 4.0');
}
} else {
assert.commandWorked(db.foo.stats(),
'db.collection.stats() should return 0s on non-existent collection');
}
// ---------- load some data -----
// need collections sharded before and after main collection for proper test
s.adminCommand({shardcollection: "test.aaa", key: {_id: 1}});
s.adminCommand(
{shardcollection: "test.foo", key: {_id: 1}}); // this collection is actually used
s.adminCommand({shardcollection: "test.zzz", key: {_id: 1}});
N = 10000;
s.adminCommand({split: "test.foo", middle: {_id: N / 2}});
s.adminCommand({
moveChunk: "test.foo",
find: {_id: 3},
to: s.getNonPrimaries("test")[0],
_waitForDelete: true
});
var bulk = db.foo.initializeUnorderedBulkOp();
for (i = 0; i < N; i++)
bulk.insert({_id: i});
assert.writeOK(bulk.execute());
// Flush all writes to disk since some of the stats are dependent on state in disk (like
// totalIndexSize).
assert.commandWorked(db.adminCommand({fsync: 1}));
a = s.shard0.getDB("test");
b = s.shard1.getDB("test");
x = assert.commandWorked(db.foo.stats());
assert.eq(N, x.count, "coll total count expected");
assert.eq(db.foo.count(), x.count, "coll total count match");
assert.eq(2, x.nchunks, "coll chunk num");
assert.eq(2, numKeys(x.shards), "coll shard num");
assert.eq(
N / 2, x.shards[s.shard0.shardName].count, "coll count on s.shard0.shardName expected");
assert.eq(
N / 2, x.shards[s.shard1.shardName].count, "coll count on s.shard1.shardName expected");
assert.eq(a.foo.count(),
x.shards[s.shard0.shardName].count,
"coll count on s.shard0.shardName match");
assert.eq(b.foo.count(),
x.shards[s.shard1.shardName].count,
"coll count on s.shard1.shardName match");
assert(!x.shards[s.shard0.shardName].indexDetails,
'indexDetails should not be present in s.shard0.shardName: ' +
tojson(x.shards[s.shard0.shardName]));
assert(!x.shards[s.shard1.shardName].indexDetails,
'indexDetails should not be present in s.shard1.shardName: ' +
tojson(x.shards[s.shard1.shardName]));
a_extras =
a.stats().objects - a.foo.count(); // things like system.namespaces and system.indexes
b_extras =
b.stats().objects - b.foo.count(); // things like system.namespaces and system.indexes
print("a_extras: " + a_extras);
print("b_extras: " + b_extras);
x = assert.commandWorked(db.stats());
assert.eq(N + (a_extras + b_extras), x.objects, "db total count expected");
assert.eq(2, numKeys(x.raw), "db shard num");
assert.eq((N / 2) + a_extras,
x.raw[s.shard0.name].objects,
"db count on s.shard0.shardName expected");
assert.eq((N / 2) + b_extras,
x.raw[s.shard1.name].objects,
"db count on s.shard1.shardName expected");
assert.eq(
a.stats().objects, x.raw[s.shard0.name].objects, "db count on s.shard0.shardName match");
assert.eq(
b.stats().objects, x.raw[s.shard1.name].objects, "db count on s.shard1.shardName match");
/* Test db.stat() and db.collection.stat() scaling */
/* Helper functions */
function statComp(stat, stat_scaled, scale) {
/* Because of loss of floating point precision, do not check exact equality */
if (stat == stat_scaled)
return true;
var msg = 'scaled: ' + stat_scaled + ', stat: ' + stat + ', scale: ' + scale;
assert.lte((stat_scaled - 2), (stat / scale), msg);
assert.gte((stat_scaled + 2), (stat / scale), msg);
}
function dbStatComp(stat_obj, stat_obj_scaled, scale) {
statComp(stat_obj.dataSize, stat_obj_scaled.dataSize, scale);
statComp(stat_obj.storageSize, stat_obj_scaled.storageSize, scale);
statComp(stat_obj.indexSize, stat_obj_scaled.indexSize, scale);
statComp(stat_obj.fileSize, stat_obj_scaled.fileSize, scale);
/* avgObjSize not scaled. See SERVER-7347 */
statComp(stat_obj.avgObjSize, stat_obj_scaled.avgObjSize, 1);
}
function collStatComp(stat_obj, stat_obj_scaled, scale, mongos) {
statComp(stat_obj.size, stat_obj_scaled.size, scale);
statComp(stat_obj.storageSize, stat_obj_scaled.storageSize, scale);
statComp(stat_obj.totalIndexSize, stat_obj_scaled.totalIndexSize, scale);
statComp(stat_obj.avgObjSize, stat_obj_scaled.avgObjSize, 1);
/* lastExtentSize doesn't exist in mongos level collection stats */
if (!mongos) {
statComp(stat_obj.lastExtentSize, stat_obj_scaled.lastExtentSize, scale);
}
}
/* db.stats() tests */
db_not_scaled = assert.commandWorked(db.stats());
db_scaled_512 = assert.commandWorked(db.stats(512));
db_scaled_1024 = assert.commandWorked(db.stats(1024));
for (var shard in db_not_scaled.raw) {
dbStatComp(db_not_scaled.raw[shard], db_scaled_512.raw[shard], 512);
dbStatComp(db_not_scaled.raw[shard], db_scaled_1024.raw[shard], 1024);
}
dbStatComp(db_not_scaled, db_scaled_512, 512);
dbStatComp(db_not_scaled, db_scaled_1024, 1024);
/* db.collection.stats() tests */
coll_not_scaled = assert.commandWorked(db.foo.stats());
coll_scaled_512 = assert.commandWorked(db.foo.stats(512));
coll_scaled_1024 = assert.commandWorked(db.foo.stats(1024));
for (var shard in coll_not_scaled.shards) {
collStatComp(coll_not_scaled.shards[shard], coll_scaled_512.shards[shard], 512, false);
collStatComp(coll_not_scaled.shards[shard], coll_scaled_1024.shards[shard], 1024, false);
}
collStatComp(coll_not_scaled, coll_scaled_512, 512, true);
collStatComp(coll_not_scaled, coll_scaled_1024, 1024, true);
/* db.collection.stats() - indexDetails tests */
(function() {
var t = db.foo;
assert.commandWorked(t.ensureIndex({a: 1}));
assert.eq(2, t.getIndexes().length);
var isWiredTiger =
(!jsTest.options().storageEngine || jsTest.options().storageEngine === "wiredTiger");
var stats = assert.commandWorked(t.stats({indexDetails: true}));
var shardName;
var shardStats;
for (shardName in stats.shards) {
shardStats = stats.shards[shardName];
assert(shardStats.indexDetails,
'indexDetails missing for ' + shardName + ': ' + tojson(shardStats));
if (isWiredTiger) {
assert.eq(t.getIndexes().length,
Object.keys(shardStats.indexDetails).length,
'incorrect number of entries in WiredTiger indexDetails: ' +
tojson(shardStats));
}
}
function getIndexName(indexKey) {
var indexes = t.getIndexes().filter(function(doc) {
return friendlyEqual(doc.key, indexKey);
});
assert.eq(
1,
indexes.length,
tojson(indexKey) + ' not found in getIndexes() result: ' + tojson(t.getIndexes()));
return indexes[0].name;
}
function checkIndexDetails(options, indexName) {
var stats = assert.commandWorked(t.stats(options));
for (shardName in stats.shards) {
shardStats = stats.shards[shardName];
assert(shardStats.indexDetails,
'indexDetails missing from db.collection.stats(' + tojson(options) +
').shards[' + shardName + '] result: ' + tojson(shardStats));
// Currently, indexDetails is only supported with WiredTiger.
if (isWiredTiger) {
assert.eq(1,
Object.keys(shardStats.indexDetails).length,
'WiredTiger indexDetails must have exactly one entry');
assert(shardStats.indexDetails[indexName],
indexName + ' missing from WiredTiger indexDetails: ' +
tojson(shardStats.indexDetails));
assert.neq(0,
Object.keys(shardStats.indexDetails[indexName]).length,
indexName + ' exists in indexDetails but contains no information: ' +
tojson(shardStats.indexDetails));
}
}
}
// indexDetailsKey - show indexDetails results for this index key only.
var indexKey = {a: 1};
var indexName = getIndexName(indexKey);
checkIndexDetails({indexDetails: true, indexDetailsKey: indexKey}, indexName);
// indexDetailsName - show indexDetails results for this index name only.
checkIndexDetails({indexDetails: true, indexDetailsName: indexName}, indexName);
}());
s.stop();
})();
|
