CODEWITHSUNDEEP
azure-cosmosdb
Reddspark
Reddspark

Reputation: 7557

CosmosDB Error while fetching page of documents: {"code":400,"body":"Command find failed: Unknown server error occurred when processing

I'm new to CosmosDB and have used Data Factory to import some test data from a BLOB into a CosmoDB container. The Monitor screen tells me it was successful. I then went to the Azure portal, opened my container and clicked 'Documents' but this does not show me any data. I then clicked the refresh button in the sub-pane (the one on the 'load more' section) and it gave me the error: Error while fetching page of documents:

{"code":400,"body":"Command find failed: Unknown server error occurred when processing this request.."}

I also could not find any good tutorials online or on Youtube that shoes step by step how to import a CSV from BLOB storage into ComosDB Document store via DataFactory, so unable to tell if I am doing it correctly.

Upvotes: 2

Views: 1002

Answers (2)

Reddspark
Reddspark

Reputation: 7557

I contacted Microsoft. Response was: "The Azure Data Factory loads data using the SQL API SDK, and does not support mMngo yet. The data loaded using the SQL API SDK would have to be in MongoDB BSON schema. Also, the Mongo DB Native driver expect the data in JSON schema and fails to deserialize triggerin the 400 error."

The MongoBulkExecutor API was recommended as an alternative but from what I can tell this really requires json too.

Upvotes: 1

Jay Gong
Jay Gong

Reputation: 23782

I also could not find any good tutorials online or on Youtube that shoes step by step how to import a CSV from BLOB storage into ComosDB Document store via DataFactory, so unable to tell if I am doing it correctly.

In fact, you should check the below components when you import csv from blob storage into cosmos db.

1.You already have created cosmos db Linked Service and DataSet.

2.You already have created cosmos db Linked Service and DataSet.

You could do the above steps on the portal.

3.Create copy activity and fill the blob storage input and cosmos db output into the activity.

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4.In addition,you need to know cosmos db sql api and cosmos db mongo api are different api,though they call named cosmos db. Based on Supported capabilities in document: Copy data to or from Azure Cosmos DB by using Azure Data Factory, Azure Cosmos DB connector only supports Copying data from and to the Azure Cosmos DB SQL API. So,please don't confuse.

If you do want to use Mongo api, you could choose mongo connector to do your jobs which is mentioned in this case:https://social.msdn.microsoft.com/Forums/security/en-US/52cddbf7-c132-490c-9088-65a38f9b7200/copy-activity-to-cosmosdb-with-mongo-api?forum=AzureDataFactory.

Upvotes: 0

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