Hi,

I'm doing a PoC with to build a cube with Kylin using a Streaming Data with Kafka. Kafka connection and cube creation works correctly. I have tested using the Kafka test generator included with Kylin and I scheduled the process with Crontab for its execution every 10 minutes, during a period of 24 hours. However when I stopped Kafka generator and Crontab schedule, I got errors in Kylin:

 * Monitor show error when it tries to load jobs. This affects not only
   to Kafka test project, but also to rest other batch projects.
     o Kyling log show this:
         + ERROR [http-bio-7070-exec-4] controller.BasicController:57 :
           org.apache.kylin.rest.exception.InternalErrorException:
           java.lang.RuntimeException:
           org.apache.kylin.job.exception.PersistentException:
           com.fasterxml.jackson.databind.JsonMappingException: No
           content to map due to end-of-input
             at [Source: java.io.DataInputStream@189348ee; line: 1,
           column: 1]
 * I cannot purge or drop this Kafka test streaming cube.
     o Kyli UI shows the following error:
         + Failed to delete cube. Caused by:
           org.apache.kylin.job.exception.hdfs.BlockMissingException:
           Could not obtain block: BP-699932432.....

I have tried and received the same error with Kylin 1.6 and Kylin 2.1. Now I Kylin is still running, but I have to solve this errors to use it in a normal way (e.g. building new cubes)

¿Anyone can help me?

Thanks in advance,

*Roberto Tardío Olmos*

/Senior Big Data & Business Intelligence Consultant/
Avenida de Brasil, 17, Planta 16.28020 Madrid
Fijo: 91.788.34.10

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