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'use strict';
/**
* agg_merge_when_not_matched_insert.js
*
* Tests $merge with "whenNotMatched" set to "insert" concurrently with moveChunk operations on the
* output collection.
*
* @tags: [requires_sharding, assumes_balancer_off, assumes_autosplit_off,
* requires_non_retryable_writes]]
*/
load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
load('jstests/concurrency/fsm_workloads/agg_with_chunk_migrations.js'); // for $config
var $config = extendWorkload($config, function($config, $super) {
// Set the collection to run concurrent moveChunk operations as the output collection.
$config.data.collWithMigrations = "agg_merge_when_not_matched_insert";
$config.data.threadRunCount = 0;
$config.states.aggregate = function aggregate(db, collName, connCache) {
const res = db[collName].aggregate([
{
$project: {
"_id.tid": {$literal: this.tid},
"_id.count": {$literal: this.threadRunCount},
"_id.doc": "$_id"
}
},
{
$merge:
{into: this.collWithMigrations, whenMatched: "fail", whenNotMatched: "insert"}
},
]);
// $merge should always return 0 documents.
assert.eq(0, res.itcount());
// If running with causal consistency, the writes may not have propagated to the secondaries
// yet.
assert.soon(() => {
return this.numDocs ==
db[this.collWithMigrations]
.find({"_id.tid": this.tid, "_id.count": this.threadRunCount})
.itcount();
});
this.threadRunCount += 1;
};
return $config;
});
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