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/**
* Perform basic tests for the split command against mongos.
*/
(function() {
'use strict';
var st = new ShardingTest({mongos: 2, shards: 2, other: {chunkSize: 1}});
var configDB = st.s0.getDB('config');
var shard0 = st.shard0.shardName;
var shard1 = st.shard1.shardName;
// split on invalid ns.
assert.commandFailed(configDB.adminCommand({split: 'user', key: {_id: 1}}));
// split on unsharded collection (db is not sharding enabled).
assert.commandFailed(configDB.adminCommand({split: 'test.user', key: {_id: 1}}));
assert.commandWorked(configDB.adminCommand({enableSharding: 'test'}));
st.ensurePrimaryShard('test', shard0);
// split on unsharded collection (db is sharding enabled).
assert.commandFailed(configDB.adminCommand({split: 'test.user', key: {_id: 1}}));
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.user', key: {_id: 1}}));
assert.eq(null, configDB.chunks.findOne({ns: 'test.user', min: {_id: 0}}));
assert.commandWorked(configDB.adminCommand({split: 'test.user', middle: {_id: 0}}));
assert.neq(null, configDB.chunks.findOne({ns: 'test.user', min: {_id: 0}}));
// Cannot split on existing chunk boundary.
assert.commandFailed(configDB.adminCommand({split: 'test.user', middle: {_id: 0}}));
// Attempt to split on a value that is not the shard key.
assert.commandFailed(configDB.adminCommand({split: 'test.user', middle: {x: 100}}));
assert.commandFailed(configDB.adminCommand({split: 'test.user', find: {x: 100}}));
assert.commandFailed(
configDB.adminCommand({split: 'test.user', bounds: [{x: MinKey}, {x: MaxKey}]}));
// Insert documents large enough to fill up a chunk, but do it directly in the shard in order
// to bypass the auto-split logic.
var kiloDoc = new Array(1024).join('x');
var testDB = st.rs0.getPrimary().getDB('test');
var bulk = testDB.user.initializeUnorderedBulkOp();
for (var x = -1200; x < 1200; x++) {
bulk.insert({_id: x, val: kiloDoc});
}
assert.writeOK(bulk.execute());
assert.eq(1, configDB.chunks.find({ns: 'test.user', min: {$gte: {_id: 0}}}).itcount());
// Errors if bounds do not correspond to existing chunk boundaries.
assert.commandFailed(configDB.adminCommand({split: 'test.user', bounds: [{_id: 0}, {_id: 1000}]}));
assert.eq(1, configDB.chunks.find({ns: 'test.user', min: {$gte: {_id: 0}}}).itcount());
assert.commandWorked(
configDB.adminCommand({split: 'test.user', bounds: [{_id: 0}, {_id: MaxKey}]}));
assert.gt(configDB.chunks.find({ns: 'test.user', min: {$gte: {_id: 0}}}).itcount(), 1);
assert.eq(1, configDB.chunks.find({ns: 'test.user', min: {$lt: {_id: 0}}}).itcount());
assert.commandWorked(configDB.adminCommand({split: 'test.user', middle: {_id: -600}}));
assert.gt(configDB.chunks.find({ns: 'test.user', min: {$lt: {_id: 0}}}).itcount(), 1);
// Mongos must refresh metadata if the chunk version does not match
assert.commandWorked(st.s0.adminCommand(
{moveChunk: 'test.user', find: {_id: -900}, to: shard1, _waitForDelete: true}));
assert.commandWorked(st.s1.adminCommand({split: 'test.user', middle: {_id: -900}}));
assert.commandWorked(st.s1.adminCommand(
{moveChunk: 'test.user', find: {_id: -900}, to: shard0, _waitForDelete: true}));
assert.commandWorked(st.s1.adminCommand(
{moveChunk: 'test.user', find: {_id: -901}, to: shard0, _waitForDelete: true}));
assert.eq(0, configDB.chunks.find({ns: 'test.user', shard: shard1}).itcount());
//
// Compound Key
//
assert.commandWorked(configDB.adminCommand({shardCollection: 'test.compound', key: {x: 1, y: 1}}));
assert.eq(null, configDB.chunks.findOne({ns: 'test.compound', min: {x: 0, y: 0}}));
assert.commandWorked(configDB.adminCommand({split: 'test.compound', middle: {x: 0, y: 0}}));
assert.neq(null, configDB.chunks.findOne({ns: 'test.compound', min: {x: 0, y: 0}}));
// cannot split on existing chunk boundary.
assert.commandFailed(configDB.adminCommand({split: 'test.compound', middle: {x: 0, y: 0}}));
bulk = testDB.compound.initializeUnorderedBulkOp();
for (x = -1200; x < 1200; x++) {
bulk.insert({x: x, y: x, val: kiloDoc});
}
assert.writeOK(bulk.execute());
assert.eq(1, configDB.chunks.find({ns: 'test.compound', min: {$gte: {x: 0, y: 0}}}).itcount());
assert.commandWorked(configDB.adminCommand(
{split: 'test.compound', bounds: [{x: 0, y: 0}, {x: MaxKey, y: MaxKey}]}));
assert.gt(configDB.chunks.find({ns: 'test.compound', min: {$gte: {x: 0, y: 0}}}).itcount(), 1);
assert.eq(1, configDB.chunks.find({ns: 'test.compound', min: {$lt: {x: 0, y: 0}}}).itcount());
assert.commandWorked(configDB.adminCommand({split: 'test.compound', find: {x: -1, y: -1}}));
assert.gt(configDB.chunks.find({ns: 'test.compound', min: {$lt: {x: 0, y: 0}}}).itcount(), 1);
st.stop();
})();
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