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/**
* Tests the auto split will be triggered when using write commands.
*/
(function() {
'use strict';
load('jstests/sharding/autosplit_include.js');
var st = new ShardingTest({shards: 1, other: {chunkSize: 1, enableAutoSplit: true}});
var configDB = st.s.getDB('config');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.insert', key: {x: 1}}));
var doc1k = (new Array(1024)).join('x');
var testDB = st.s.getDB('test');
function testSingleBatchInsertShouldAutoSplit() {
jsTest.log('Test single batch insert should auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.insert', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.insert"}).itcount());
// This should result in a little over 3MB inserted into the chunk, so with
// a max chunk size of 1MB we'd expect the autosplitter to split this into
// at least 3 chunks
for (var x = 0; x < 3100; x++) {
assert.commandWorked(testDB.runCommand({
insert: 'insert',
documents: [{x: x, v: doc1k}],
ordered: false,
writeConcern: {w: 1}
}));
}
waitForOngoingChunkSplits(st);
// Inserted batch is a multiple of the chunkSize, expect the chunks to split into
// more than 2.
assert.gt(configDB.chunks.find({"ns": "test.insert"}).itcount(), 2);
testDB.dropDatabase();
jsTest.log('Test single batch update should auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.update', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.update"}).itcount());
for (var x = 0; x < 2100; x++) {
assert.commandWorked(testDB.runCommand({
update: 'update',
updates: [{q: {x: x}, u: {x: x, v: doc1k}, upsert: true}],
ordered: false,
writeConcern: {w: 1}
}));
}
waitForOngoingChunkSplits(st);
assert.gt(configDB.chunks.find({"ns": "test.update"}).itcount(), 1);
testDB.dropDatabase();
}
function testSingleDeleteShouldNotAutoSplit() {
jsTest.log('Test single delete should not auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.delete', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.delete"}).itcount());
for (var x = 0; x < 1100; x++) {
assert.commandWorked(testDB.runCommand({
delete: 'delete',
deletes: [{q: {x: x, v: doc1k}, limit: NumberInt(0)}],
ordered: false,
writeConcern: {w: 1}
}));
}
// If we are autosplitting (which we shouldn't be), we want to wait until
// it's finished, otherwise we could falsely think no autosplitting was
// done when really it was just in progress.
waitForOngoingChunkSplits(st);
assert.eq(1, configDB.chunks.find({"ns": "test.delete"}).itcount());
testDB.dropDatabase();
}
function testBatchedInsertShouldAutoSplit() {
jsTest.log('Test batched insert should auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.insert', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.insert"}).itcount());
// Note: Estimated 'chunk size' tracked by mongos is initialized with a random value so
// we are going to be conservative.
for (var x = 0; x < 2100; x += 400) {
var docs = [];
for (var y = 0; y < 400; y++) {
docs.push({x: (x + y), v: doc1k});
}
assert.commandWorked(testDB.runCommand(
{insert: 'insert', documents: docs, ordered: false, writeConcern: {w: 1}}));
}
waitForOngoingChunkSplits(st);
assert.gt(configDB.chunks.find({"ns": "test.insert"}).itcount(), 1);
testDB.dropDatabase();
}
function testBatchedUpdateShouldAutoSplit() {
jsTest.log('Test batched update should auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.update', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.update"}).itcount());
for (var x = 0; x < 2100; x += 400) {
var docs = [];
for (var y = 0; y < 400; y++) {
var id = x + y;
docs.push({q: {x: id}, u: {x: id, v: doc1k}, upsert: true});
}
assert.commandWorked(testDB.runCommand(
{update: 'update', updates: docs, ordered: false, writeConcern: {w: 1}}));
}
waitForOngoingChunkSplits(st);
assert.gt(configDB.chunks.find({"ns": "test.update"}).itcount(), 1);
testDB.dropDatabase();
}
function testBatchedDeleteShouldNotAutoSplit() {
jsTest.log('Test batched delete should not auto-split');
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.delete', key: {x: 1}}));
assert.eq(1, configDB.chunks.find({"ns": "test.delete"}).itcount());
for (var x = 0; x < 2100; x += 400) {
var docs = [];
for (var y = 0; y < 400; y++) {
var id = x + y;
docs.push({q: {x: id, v: doc1k}, top: 0});
}
assert.commandWorked(testDB.runCommand({
delete: 'delete',
deletes: [{q: {x: x, v: doc1k}, limit: NumberInt(0)}],
ordered: false,
writeConcern: {w: 1}
}));
}
// If we are autosplitting (which we shouldn't be), we want to wait until
// it's finished, otherwise we could falsely think no autosplitting was
// done when really it was just in progress.
waitForOngoingChunkSplits(st);
assert.eq(1, configDB.chunks.find({"ns": "test.delete"}).itcount());
}
var testCases = [
testSingleBatchInsertShouldAutoSplit,
testSingleDeleteShouldNotAutoSplit,
testBatchedInsertShouldAutoSplit,
testBatchedUpdateShouldAutoSplit,
testBatchedDeleteShouldNotAutoSplit
];
for (let testCase of testCases) {
try {
testDB.dropDatabase();
testCase();
} catch (e) {
print("Retrying test case failed due to " + e);
// (SERVER-59882) The split may not have happened due to write-unit-of-work commit delay
// Give it another best-effort try, given the low probability it would happen again
testDB.dropDatabase();
testCase();
}
}
st.stop();
})();
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