mongoimport fails to import an empty JSON array

Problem Statement/Rationale

mongoimport fails when importing an empty JSON array, and emits an error. Instead, it should successfully import 0 records and exit.

Steps to Reproduce

1. Create file empty-json-array.json, with contents []
2. Replace placeholders as appropriate, then run:
    

   mongoimport --uri <uri> --db <db> --collection <collection> --type json --jsonArray --file empty-json-array.json

    

   Expected Results

A successful import with no errors reported

Actual Results

Failed: error processing document #1: invalid character ']' looking for beginning of value

Additional Notes

Version:

mongoimport version: 100.7.0

git version: 17946f45f5fabfcdd99f8960b9109f976d370631

Go version: go1.19.3

   os: linux

   arch: amd64

   compiler: gc 

Solution

We will make mongoimport accept a file with an empty JSON array in it. When it encounters such a file, it will log a message saying that this file will be skipped because it does not contain any documents. This message will be logged at the Info level.