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/**
* Test for the ReshardingTest fixture itself.
*
* Verifies that the reshardCollection command is run and kept suspended in the "applying" state.
*
* @tags: [
* uses_atclustertime
* ]
*/
(function() {
"use strict";
load("jstests/sharding/libs/resharding_test_fixture.js");
const reshardingTest = new ReshardingTest({numDonors: 2, numRecipients: 2, reshardInPlace: true});
reshardingTest.setup();
const ns = "reshardingDb.coll";
const donorShardNames = reshardingTest.donorShardNames;
const sourceCollection = reshardingTest.createShardedCollection({
ns,
shardKeyPattern: {oldKey: 1},
chunks: [
{min: {oldKey: MinKey}, max: {oldKey: 0}, shard: donorShardNames[0]},
{min: {oldKey: 0}, max: {oldKey: MaxKey}, shard: donorShardNames[1]},
],
});
// Perform some inserts before resharding starts so there's data to clone.
assert.commandWorked(sourceCollection.insert([
{_id: "stays on shard0", oldKey: -10, newKey: -10},
{_id: "moves to shard0", oldKey: 10, newKey: -10},
{_id: "moves to shard1", oldKey: -10, newKey: 10},
{_id: "stays on shard1", oldKey: 10, newKey: 10},
]));
const recipientShardNames = reshardingTest.recipientShardNames;
reshardingTest.startReshardingInBackground({
newShardKeyPattern: {newKey: 1},
newChunks: [
{min: {newKey: MinKey}, max: {newKey: 0}, shard: recipientShardNames[0]},
{min: {newKey: 0}, max: {newKey: MaxKey}, shard: recipientShardNames[1]},
],
});
// Wait for the recipients to have finished cloning and then perform some updates so there's oplog
// entries to fetch and apply.
const mongos = sourceCollection.getMongo();
assert.soon(() => {
const coordinatorDoc = mongos.getCollection("config.reshardingOperations").findOne();
return coordinatorDoc !== null && coordinatorDoc.state === "applying";
});
assert.commandWorked(sourceCollection.update({_id: 0}, {$inc: {extra: 1}}, {multi: true}));
// The reshardCollection command should still be actively running on mongos.
const ops = mongos.getDB("admin")
.aggregate([
{$currentOp: {allUsers: true, localOps: true}},
{$match: {"command.reshardCollection": ns}},
])
.toArray();
assert.eq(1, ops.length, "failed to find reshardCollection in $currentOp output");
reshardingTest.teardown();
})();
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