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/**
* This test confirms that chunks get split as they grow due to data insertion.
*/
(function() {
'use strict';
load('jstests/sharding/autosplit_include.js');
load("jstests/sharding/libs/find_chunks_util.js");
var s = new ShardingTest({
name: "auto1",
shards: 2,
mongos: 1,
other: {enableAutoSplit: true, chunkSize: 10},
});
assert.commandWorked(s.s0.adminCommand({enablesharding: "test"}));
s.ensurePrimaryShard('test', s.shard1.shardName);
assert.commandWorked(s.s0.adminCommand({shardcollection: "test.foo", key: {num: 1}}));
var bigString = "";
while (bigString.length < 1024 * 50)
bigString += "asocsancdnsjfnsdnfsjdhfasdfasdfasdfnsadofnsadlkfnsaldknfsad";
var db = s.getDB("test");
var primary = s.getPrimaryShard("test").getDB("test");
var coll = db.foo;
var counts = [];
var i = 0;
// Inserts numDocs documents into the collection, waits for any ongoing
// splits to finish, and then prints some information about the
// collection's chunks
function insertDocsAndWaitForSplit(numDocs) {
var bulk = coll.initializeUnorderedBulkOp();
var curMaxKey = i;
// Increment the global 'i' variable to keep 'num' unique across all
// documents
for (; i < curMaxKey + numDocs; i++) {
bulk.insert({num: i, s: bigString});
}
assert.commandWorked(bulk.execute());
waitForOngoingChunkSplits(s);
s.printChunks();
s.printChangeLog();
}
insertDocsAndWaitForSplit(100);
counts.push(findChunksUtil.countChunksForNs(s.config, "test.foo"));
assert.eq(100, db.foo.find().itcount());
print("datasize: " +
tojson(s.getPrimaryShard("test").getDB("admin").runCommand({datasize: "test.foo"})));
insertDocsAndWaitForSplit(100);
counts.push(findChunksUtil.countChunksForNs(s.config, "test.foo"));
insertDocsAndWaitForSplit(200);
counts.push(findChunksUtil.countChunksForNs(s.config, "test.foo"));
insertDocsAndWaitForSplit(300);
counts.push(findChunksUtil.countChunksForNs(s.config, "test.foo"));
assert(counts[counts.length - 1] > counts[0], "counts 1 : " + tojson(counts));
var sorted = counts.slice(0);
// Sort doesn't sort numbers correctly by default, resulting in fail
sorted.sort(function(a, b) {
return a - b;
});
assert.eq(counts, sorted, "counts 2 : " + tojson(counts));
print(counts);
printjson(db.stats());
s.stop();
})();
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