While working on SERVER-53987 I came across these failures in my patch isolated to the cst_jscore_passthrough suite. I've disabled these tests in cst_jscore_passthrough.yml for the time being.
Looking at the timeseries_bucket_limit_count.js failure, the query is returning incorrect results. We expect 1100 documents but only get 2.
assert: [1100] != [2] are not equal : [ { "x" : 0, "_id" : 0 }, { "x" : 1000, "_id" : 1000 } ] doassert@src/mongo/shell/assert.js:20:14 assert.eq@src/mongo/shell/assert.js:179:9 runTest@jstests/core/timeseries/timeseries_bucket_limit_count.js:52:5 @jstests/core/timeseries/timeseries_bucket_limit_count.js:93:1 @jstests/core/timeseries/timeseries_bucket_limit_count.js:13:2
I printed the explain() output, but couldn't see anything out of the ordinary:
{
"stages" : [
{
"$cursor" : {
"queryPlanner" : {
"plannerVersion" : 1,
"namespace" : "timeseries_bucket_limit_count.system.buckets.t_1",
"indexFilterSet" : false,
"parsedQuery" : {
},
"queryHash" : "8B3D4AB8",
"planCacheKey" : "8B3D4AB8",
"maxIndexedOrSolutionsReached" : false,
"maxIndexedAndSolutionsReached" : false,
"maxScansToExplodeReached" : false,
"winningPlan" : {
"stage" : "COLLSCAN",
"direction" : "forward"
},
"rejectedPlans" : [ ]
}
}
},
{
"$_internalUnpackBucket" : {
"exclude" : [ ],
"timeField" : "time"
}
},
{
"$project" : {
"_id" : true,
"x" : true
}
},
{
"$sort" : {
"sortKey" : {
"_id" : 1
}
}
},
{
"$project" : {
"_id" : true,
"x" : true
}
}
],
"serverInfo" : {
"host" : "ip-10-122-10-73",
"port" : 20000,
"version" : "0.0.0",
"gitVersion" : "unknown"
},
"command" : {
"aggregate" : "system.buckets.t_1",
"pipeline" : [
{
"$_internalUnpackBucket" : {
"timeField" : "time",
"exclude" : [ ]
}
},
{
"$sort" : {
"_id" : 1
}
},
{
"$project" : {
"x" : 1
}
}
],
"cursor" : {
},
"collation" : {
"locale" : "simple"
}
},
"ok" : 1
}
I suspect this may be an issue with the CST parser as it's only failing in the cst_jscore_passthrough suite for the all feature flags variant. I wonder if removing the _id index table on time-series collections triggered some unexpected behaviour.
- depends on
-
SERVER-53746 Disable cst_jscore_passthrough suite until project is restarted
-
- Closed
-
- related to
-
SERVER-53987 Do not create the _id index for time-series collections
-
- Closed
-
-
SERVER-54428 Complete TODO listed in SERVER-54042
-
- Closed
-