- Newest
- Most votes
- Most comments
The issue you're experiencing with Athena federated query failing to process timestamp/date formats from your IoT data stored in DocumentDB is likely due to a mismatch between the format of the timestamp in your data and the expected format in Athena.
To overcome this issue, you have a few options:
-
Use a custom SerDe (Serializer/Deserializer): You can create a custom SerDe that can handle the ISO 8601 format used by your IoT sensors. This would allow Athena to correctly interpret the timestamp format.
-
Transform the data: You could use AWS Glue ETL jobs to transform the data before querying it with Athena. In the Glue job, you can convert the ISO 8601 timestamp to a format that Athena can understand natively.
-
Use Athena's built-in functions: If you keep the "time" column as a string in your Glue table, you can use Athena's date and time functions to parse and convert the string to a timestamp or date format during your query. For example:
SELECT parse_datetime(time, 'yyyy-MM-dd''T''HH:mm:ss') AS parsed_time FROM your_table
This approach allows you to work with the data as a proper timestamp in your queries and should be compatible with QuickSight's time-based analytics.
-
Adjust the Glue table definition: In your Glue table definition, you might be able to specify the exact format of your timestamp. Try setting the "time" column to type "timestamp" with format "yyyy-MM-dd'T'HH:mm:ss".
For the QuickSight analysis, option 3 or 4 would likely be the most straightforward. You can create a view in Athena that includes the parsed timestamp, and then use this view as the data source for QuickSight. This way, QuickSight will see the "time" field as a proper timestamp and enable all time-granularity related analytics.
Remember to test your solution thoroughly, as the exact behavior may depend on the specific versions of Athena, Glue, and the federated query connector you're using.
Sources
Community | What happens when you run a query in Amazon Athena?
Community | What happens when you run a query in Amazon Athena?
Use Amazon Athena Federated Query - Amazon Athena
Community | Unleashing Data Analytics on S3 Data lake with AWS Glue Crawler and Amazon Athena
Relevant content
- asked 3 years ago
- asked a year ago
- AWS OFFICIALUpdated 2 months ago
- AWS OFFICIALUpdated 2 years ago
- AWS OFFICIALUpdated 3 months ago
- AWS OFFICIALUpdated 4 months ago