[jira] [Created] (NIFI-4459) Confluent Schema Registry - not tolerant to error in single Subject

["Dave Torok (JIRA)" <ji...@apache.org>]

Dave Torok created NIFI-4459:
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             Summary: Confluent Schema Registry - not tolerant to error in single Subject
                 Key: NIFI-4459
                 URL: https://issues.apache.org/jira/browse/NIFI-4459
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
    Affects Versions: 1.3.0, 1.5.0
            Reporter: Dave Torok
            Priority: Minor


NOTE:  could not select "1.4.0" when creating this Jira.

Getting Could not find Schema with id 12345 from the Confluent Schema Registry.

Root cause:
1.  RestSchemaRegistryClient.java  - gets all subjects from the registry https://{registry}/subjects

2.  Iterates through the subjects to get schema IDs  (getSchema method line 113-126)
https://{registry}/subjects/{subjectname}/ids/latest

3.  If  ANY subject in the list of subjects has an error / resource not found, lookup FAILS, even if the subject with the matching ID is anywhere in the list of subjects.

Proposed Fix: 
Tolerate individual subject calls that return errors (NOT_FOUND status).



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