Zachary King created LIVY-444:
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Summary: Add OPTIONS routes to REST API to enable CORS pre-flight
requests
Key: LIVY-444
URL: https://issues.apache.org/jira/browse/LIVY-444
Project: Livy
Issue Type: Improvement
Reporter: Zachary King
Currently, when one tries to send a POST request to the Livy REST API using a
JavaScript client, any CORS pre-flight requests fail because the Livy REST API
does not have routes to handle OPTIONS requests.
I recommend adding routes for OPTIONS requests to respond with a header to
allow all origins, or have this header be configurable in the
`livy-client.conf` (perhaps in a setting like
`livy.client.http.allowed-origins`).
If this is an improvement that is agreed on, can I take a stab at it?
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