Ben Humphreys

MongoImport Bug?

Update: Quick hack solution - add a line with an empty JSON object at the start of the file. { }

I’ve come across some odd behaviour when using mongoimport. I’m not sure if it’s an issue with my setup, or a bug in Mongo, but here’s what I’ve found.

mongoimport version 2.0.0
mongod db version v2.0.0, pdfile version 4.5

The data I’m trying to import is a small subset of NTCIR data. I hope it’s OK to post here in case there’s an issue in the data itself that’s causing the bug.

The first line never gets imported. I’ve tried varying the order, inserting a blank line in the header and it’s always the first line.

Even more confusingly, mongoimport claims it’s working correctly, saying it imported 3 objects:

Then checking the data in the collection returns only 2 results:

Does anyone have any ideas of what this could be?