SAM fail to get schema from Schema Registry

qiwang — Sun, 18 Aug 2019 03:54:13 GMT

Following the instruction under link below to build my first SAM applicaiton

https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.0.0/bk_getting-started-with-stream-analytics/content/ch_building-end-to-end-app.html

I kept getting error with the kafka source added with error message as "Schema not found"

While looking at the SAM log, I got 404 error

INFO   [18:14:55.230] [dw-95 - GET /api/v1/schemas/truck_events_avro] c.h.s.s.s.SchemaResource -  Received path: [truck_events_avro]
ERROR  [18:14:55.269] [dw-95 - GET /api/v1/schemas/truck_events_avro] c.h.s.s.s.SchemaResource -  Got exception: [RuntimeException] / message [javax.ws.rs.NotFoundException: HTTP 404 Not Found] / related resource location: [com.hortonworks.streamline.streams.service.SchemaResource.getKafkaSourceSchema](SchemaResource.java:131)

Where on Registry log, it seems that the schema SAM try to get does not exist, the request did get through but no schema exist with that schema key

INFO   [18:14:55.260] [dw-19350 - GET /api/v1/schemaregistry/schemas/truck_events_avro/versions/latest] c.h.r.s.w.SchemaRegistryResource -  No schemas found with schemakey: [truck_events_avro]

I did create all the schema in SchemaRegistry following the steps in the guide and I can see all the schema from the dash board on http://REGISTRY_SERVER:7788/

However, when try to get the schema with API from http://REGISTRY_SERVER:7788/api/v1/schemaregistry/schemas/truck_events_avro/versions/latest i got the same error like in registry.log

{"responseCode":1101,"responseMessage":"Entity with id [truck_events_avro] not found."}

Any suggestions on how to fix the probelm?

Re: SAM fail to get schema from Schema Registry

namaheshwari — Sat, 17 Jun 2017 01:35:35 GMT

Ping @Raghav Kumar Gautam

Re: SAM fail to get schema from Schema Registry

qiwang — Sun, 18 Aug 2019 03:53:59 GMT

Found the reason. I was following an older version which has the schema registered with name postfix ":v", it apparently is not needed any more. So after register the schema again with name as the kafka topic, everything works fine.

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SAM fail to get schema from Schema Registry

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Re: SAM fail to get schema from Schema Registry