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  1. Core Server
  2. SERVER-12814

Aggregation: cursor batchSize NaN is considered a negative number

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    • Query Optimization
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      I'm puzzled for a couple of reasons:
      1) NaN is not a negative numbers so the error message should be at least different.
      2) Other operations handle NaN differently, e.g. find().limit(Nan) is equivalent to find().limit().

      > use foo
switched to db foo
> var bigArray = [];
> for (var i = 0; i < 1000; ++i) { bigArray.push(i); }
1000
> var bigStr = Array(1001).toString();
> for (var i = 0; i < 100; ++i) { db.goo.insert({_id: i, bigArray: bigArray, bigStr: bigStr})};
WriteResult({ "nInserted" : 1 })
> var cursor = db.runCommand({aggregate: "goo", pipeline: [{$unwind:'$bigArray'}], cursor : {batchSize: NaN}})
> cursor
{
	"errmsg" : "exception: Cursor batchSize must not be negative",
	"code" : 16957,
	"ok" : 0
}

            Assignee:
            backlog-query-optimization [DO NOT USE] Backlog - Query Optimization
            Reporter:
            davide.italiano Davide Italiano
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              Created:
              Updated: