trying to create a csv file in s3 using glue from mongodb as data source.

Question

i  have installed a mongodb server on t2 micro. i was able to successfully connect it with mongo compass without ssh tunnel and just the authentication and public ip.

then i have also created a crawler and ran it on the source and the crawler successfully created a table and i can see the names of all of the fields.

now i am tryin to make a glue job but i am constantly getting this error:
An error occurred while calling o96.getDynamicFrame. scala.collection.immutable.HashMap$HashTrieMap cannot be cast to java.lang.String

i am successfully able to run another glue job on a sample json data sitting in s3.
jobid: Job Run - jr_19c00d6ff707bd8af110e007a207d9d92d0f64e41dacffa98250398b57dbf30b

i am stuck on this error for two days now. any help will be highly appreciated.

Ananth Tirumanur · Answer

Could you please try tweaking the additional_options in your code - I am assuming your code looks like the one below? The error suggests that it is expecting a String but you passed say a Boolean or list or other incompatible data type. If none of those work, please share your code snippet.

```
source_df = glue_context.create_dynamic_frame_from_catalog(
        database = catalogDB,
        table_name = catalogTable,
        additional_options = {"database":"database_name", 
            "collection":"collection_name"}) 
```

trying to create a csv file in s3 using glue from mongodb as data source.

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