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
|
// This script tests the following behaviors:
// - Creates a sharded collection (test.foo)
// - Manually adds a split point
// - Disables the balancer
// - Inserts 10k documents and ensures they're evenly distributed
// - Verifies a $where query can be killed on multiple DBs
// - Tests fsync and fsync+lock permissions on sharded db
var s = new ShardingTest({shards: 2,
mongos: 1,
verbose:1,
other: {separateConfig: true}});
var db = s.getDB("test"); // db variable name is required due to startParallelShell()
var numDocs = 10000;
db.foo.drop();
// stop the balancer
s.stopBalancer()
// shard test.foo and add a split point
s.adminCommand({enablesharding: "test"});
s.adminCommand({shardcollection : "test.foo", key: {_id: 1}});
s.adminCommand({split : "test.foo", middle: {_id: numDocs/2}});
// move a chunk range to the non-primary shard
s.adminCommand({moveChunk: "test.foo", find: {_id: 3},
to: s.getNonPrimaries("test")[0], _waitForDelete: true});
// restart balancer
s.setBalancer(true)
// insert 10k small documents into the sharded collection
var bulk = db.foo.initializeUnorderedBulkOp();
for (i = 0; i < numDocs; i++)
bulk.insert({ _id: i });
assert.writeOK(bulk.execute());
var x = db.foo.stats();
// verify the colleciton has been sharded and documents are evenly distributed
assert.eq("test.foo", x.ns, "namespace mismatch");
assert(x.sharded, "collection is not sharded");
assert.eq(numDocs, x.count, "total count");
assert.eq(numDocs / 2, x.shards.shard0000.count, "count on shard0000");
assert.eq(numDocs / 2, x.shards.shard0001.count, "count on shard0001");
assert(x.totalIndexSize > 0);
assert(x.numExtents > 0);
// insert one doc into a non-sharded collection
db.bar.insert({x: 1});
var x = db.bar.stats();
assert.eq(1, x.count, "XXX1");
assert.eq("test.bar", x.ns, "XXX2");
assert(!x.sharded, "XXX3: " + tojson(x));
if (0) {// SERVER-14143
// fork shell and start querying the data
var start = new Date();
// TODO: Still potential problem when our sampling of current ops misses when $where is active -
// solution is to increase sleep time
var whereKillSleepTime = 10000;
var parallelCommand =
"try { " +
" db.foo.find(function(){ " +
" sleep( " + whereKillSleepTime + " ); " +
" return false; " +
" }).itcount(); " +
"} " +
"catch(e) { " +
" print('PShell execution ended:'); " +
" printjson(e) " +
"}";
// fork a parallel shell, but do not wait for it to start
print("about to fork new shell at: " + Date());
join = startParallelShell(parallelCommand);
print("done forking shell at: " + Date());
// Get all current $where operations
function getMine(printInprog) {
var inprog = db.currentOp().inprog;
if (printInprog)
printjson(inprog);
// Find all the where queries
var mine = [];
for (var x=0; x<inprog.length; x++) {
if (inprog[x].query && inprog[x].query.$where) {
mine.push(inprog[x]);
}
}
return mine;
}
var curOpState = 0; // 0 = not found, 1 = killed
var killTime = null;
var i = 0;
assert.soon(function() {
// Get all the current operations
mine = getMine(true); // SERVER-8794: print all operations
// get curren tops, but only print out operations before we see a $where op has started
// mine = getMine(curOpState == 0 && i > 20);
i++;
// Wait for the queries to start (one per shard, so 2 total)
if (curOpState == 0 && mine.length == 2) {
// queries started
curOpState = 1;
// kill all $where
mine.forEach(function(z) {
printjson(db.getSisterDB("admin").killOp(z.opid));
});
killTime = new Date();
}
// Wait for killed queries to end
else if (curOpState == 1 && mine.length == 0) {
// Queries ended
curOpState = 2;
return true;
}
}, "Couldn't kill the $where operations.", 2 * 60 * 1000);
print("after loop: " + Date());
assert(killTime, "timed out waiting too kill last mine:" + tojson(mine));
assert.eq( 2 , curOpState , "failed killing" );
killTime = new Date().getTime() - killTime.getTime();
print("killTime: " + killTime);
print("time if run full: " + (numDocs * whereKillSleepTime));
assert.gt(whereKillSleepTime * numDocs / 20, killTime, "took too long to kill");
// wait for the parallel shell we spawned to complete
join();
var end = new Date();
print("elapsed: " + (end.getTime() - start.getTime()));
}
// test fsync command on non-admin db
x = db.runCommand("fsync");
assert(!x.ok , "fsync on non-admin namespace should fail : " + tojson(x));
assert(x.code == 13,
"fsync on non-admin succeeded, but should have failed: " + tojson(x));
// test fsync on admin db
x = db._adminCommand("fsync");
assert(x.ok == 1 && x.numFiles > 0, "fsync failed: " + tojson(x));
// test fsync+lock on admin db
x = db._adminCommand({"fsync" :1, lock:true});
assert(!x.ok, "lock should fail: " + tojson(x));
// write back stuff
// SERVER-4194
function countWritebacks(curop) {
print("---------------");
var num = 0;
for (var i = 0; i < curop.inprog.length; i++) {
var q = curop.inprog[i].query;
if (q && q.writebacklisten) {
printjson(curop.inprog[i]);
num++;
}
}
return num;
}
x = db.currentOp();
assert.eq(0, countWritebacks(x), "without all");
x = db.currentOp(true);
y = countWritebacks(x);
assert(y == 1 || y == 2, "with all: " + y);
s.stop()
|
