**panic: Got unknown index key type for field user_id**

[d4rqu]

Hello,

This is my pipeline:

**var source = mongodb({ "uri": "${MONGODB_URI}", // "timeout": "30s", // "tail": false, // "ssl": false, // "cacerts": ["/path/to/cert.pem"], // "wc": 1, // "fsync": false, "bulk": true, // "collection_filters": "{}", "read_preference": "Primary" })

var sink = elasticsearch({ "uri": "${ELASTICSEARCH_URI}" // "timeout": "10s", // defaults to 30s // "aws_access_key": "ABCDEF", // used for signing requests to AWS Elasticsearch service // "aws_access_secret": "ABCDEF" // used for signing requests to AWS Elasticsearch service // "parent_id": "elastic_parent" // defaults to "elastic_parent" parent identifier for Elasticsearch })

t.Source("source", source, "/^abonent$/").Save("sink", sink, "/.*/")**

i get error: panic: Got unknown index key type for field user_id

Please help.

[johnnason]

Greetings. I had hit this some time back as well.

First, the "panic" comes from the mongo db driver. I have an accepted PR from that team (https://github.com/globalsign/mgo/pull/298) but it's not in a release yet.

I also have a workaround PR in transporter (https://github.com/compose/transporter/pull/479) but I hesitated on merging it, since I felt the problem was better fixed in MGO. Perhaps I'll still merge it tho.

Lastly, you can simply use a mongo shell to connect to your DB and delete the offending index. If it's causing this error, it's 99% a bad index anyway.