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  1. MongoDB Shell
  2. MONGOSH-727

Shell gets into a unrecoverable bad state when pasting in invalid code

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    • 3
    • Iteration Barcelona
    • Not Needed

      Problem Description

      Pasting invalid JS code into the shell gets into a bad state that it can't recover from without exiting.

      Steps to Reproduce

      • Open mongosh
      • Paste the snippet below
      var collName = 'somecoll';
var coll = db[collName];
-
coll.drop();
coll.insertOne({'val': 'abc'});
-
var pipeline = [
  {"$unset": [
    "_id",
  ]},

  {"$merge": {
    "into": collName,
    "on": "_id",
    "whenMatched": "fail",
    "whenNotMatched": "insert"
  }},     
];
-
for (let i=0; i<3; i++) {
  coll.aggregate(pipeline).next();
  print(new Date() + ' - Count: ' + coll.countDocuments({}) + ', Size: ' + coll.stats().totalSize);
}

      Expected Results

      Errors are displayed, prompt is back and things work just fine.

      Actual Results

      Additional Notes

        1. image.png
          135 kB
          Massimiliano Marcon

            Assignee:
            anna.henningsen@mongodb.com Anna Henningsen
            Reporter:
            massimiliano.marcon@mongodb.com Massimiliano Marcon
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              Created:
              Updated:
              Resolved: